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Efficient conversion of benzene and syngas to toluene and xylene over ZnO-ZrO_(2)&H-ZSM-5 bifunctional catalysts

Chinese Journal of Chemical Engineering 2022年第5期35卷 203-210页

作者： Xiao Zhao Xuan Shi Zhongshun Chen Long Xu Chengyi Dai Yazhou Zhang Xinwen Guo Dongyuan Yang Xiaoxun Ma School of Chemical Engineering Northwest UniversityXi’an 710069China International Science&Technology Cooperation Base for Clean Utilization of Hydrocarbon Resources Chemical Engineering Research Center of the Ministry of Education for Advanced Use Technology of Shanbei EnergyCollaborative Innovation Center for Development of Energy and Chemical Industry in Northern ShaanxiNorthwest UniversityXi’an 710069China School of Chemical Engineering Dalian University of TechnologyDalian 116024China Shaanxi Key Laboratory of Energy Chemical Process Intensification School of Chemical Engineering and TechnologyXi’an Jiaotong UniversityXi’an 710049China Shanxi yanchang Petroleum(Group)Corp.LtdXi’an 710000China

A series of ZnO-ZrO_(2) solid solutions with different Zn contents were synthesized by the urea coprecipitation method,which were coupled with H-ZSM-5 zeolite to form bifunctional *** a new benzene alkylation reagent,syngas was used instead of methanol to realize the efficient conversion of syngas and benzene into toluene and xylene.A suitable ratio of ZnO-ZrO_(2) led to the significant improvement in the catalytic performance,and a suitable amount of acid helped to increase the selectivity of toluene/xylene and reduce the selectivity of the by-products ethylbenzene and C^(9+) *** highest benzene conversion of 89.2%and toluene/xylene selectivity of 88.7%were achieved over 10%ZnO-ZrO_(2)&H-ZSM-5(Si/Al=23)at a pressure of 3 MPa and a temperature of 450℃.In addition,the effect of the zeolite framework structure on product distribution was *** to the molecular dynamics of aromatic hydrocarbons,H-ZSM-5 zeolites comprise 10-membered-ring pores,which are beneficial to the activation of benzene;hence,the conversion of benzene is higher.H-ZSM-35 and HMOR zeolites exhibited small eight-membered-ring channels,which were not conducive to the passage of benzene;hence,the by-product ethylbenzene exhibits a higher *** distance between the active centers of the bifunctional catalysts was the main factor affecting the catalytic performance,and the powder mixing method was more conducive to the conversion of syngas and benzene.

关键词： ZnO-ZrO_(2) Bifunctional catalysts Aromatics Alkylation of benzene Syngas

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Evaluation of Metabolites Derived from Lactic Acid Bacteria Isolated from Kimchi

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ACS Symposium Series 2019年 1303卷 3-10页

作者： Hwang, Hyelyeon Lee, Jong-Hee Research and Development Division Advanced Process Technology and Fermentation Research Group World Institute of Kimchi Gwangju61755 Korea Republic of

Food fermentation facilitates long-term storage and increases the amount of active metabolites produced by lactic acid bacteria (LAB), with consequent beneficial effects for human health. Therefore, the identification of metabolites from fermented foods is important in elucidating the fermentation mechanism and improving the taste, flavor, and amount of active compounds. In this study, we cultured LAB isolated from kimchi and performed liquid chromatography-tandem mass spectrometry with principal-component analysis to analyze the metabolites produced. Kimchi is a popular Korean fermented food with numerous health benefits, and its constituent bacteria have been well-characterized. We have demonstrated that the application of an untargeted metabolomics approach can identify bacteria-specific metabolites. Using this approach, we were able to identify production of the LAB metabolite HICA and showed that HICA catabolism is positively associated with acidic environments, which is the primary physiological phenotype of fermentation. Therefore, elucidation of the specific metabolites produced by these LAB strains used in kimchi fermentation can help to provide further insight into the fermentation process and improve the nutritive value of the product. © 2019 American Chemical Society. All rights reserved.

关键词： Metabolites

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The effect of Mg-Al substitution, particle size reduction, and thickness of BaFe12-2xMgxAlxO19 samples on increasing electromagnetic wave absorption

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Materials Today: Proceedings 2023年 80卷 704-709页

作者： Yustanti, Erlina Hafidzatul Hakimah, Vini Noviyanto, Alfian Randa, Maulana Manawan, Maykel Department of Metallurgical Engineering Faculty of Engineering Sultan Ageng Tirtayasa University Jl. Jend. Sudirman KM. 03 Banten Cilegon 42435 Indonesia Centre of Excellence Nanomaterial and Process Technology Laboratory Faculty of Engineering Sultan Ageng Tirtayasa University Jl. Jend. Sudirman KM. 03 Banten Cilegon 42435 Indonesia Advanced Materials Research Group Nano Center Indonesia Banten Jl. PUSPIPTEK Tangerang Selatan 15314 Indonesia Department of Mechanical Engineering Mercu Buana University Jl. Meruya Selatan Kebun Jeruk Jakarta 11650 Indonesia Research and Development Agency Indonesia Ministry of Defense Jl. Jati No.1 Pondok Labu Jakarta 12450 Indonesia Teknologi Daya Gerak Fakultas Teknologi Pertahanan Universitas Pertahanan RI. Kawasan IPSC Sentul Sukahati Kec. Citeureup Jawa Barat Kabupaten Bogor 16810 Indonesia

The synthesis of microwave-absorbing materials through a combined destruction process using mechanical alloying and ultrasonic vibration is significant due to its practical, waste-free scalability. Barium hexaferrite is the best candidate for synthesizing radar absorber materials through a combined destruction process. The substitution of Mg-Al on barium hexaferrite and decreasing particle size can increase the absorption of electromagnetic waves. Mixing stoichiometric precursors Sigma Aldrich 99 % BaCO3, Fe2O3, Al2O3, and MgO through wet milling for 20 h, followed by sintering at 1200 °C for 2 h to grow crystal embryos. Mechanical alloying was used to create the single-phase BaFe12-2xMgxAlxO19 (x = 0;0.3;0.5;0.7). re-milling for 20 h and ultrasonic vibration for 2 h reduced the particle size of the Mg-Al reinforced barium hexaferrite crystalline material. The increase in Mg-Al substitution in barium hexaferrite does not change the hexagonal structure but increases the density and absorption of electromagnetic waves. Mg-Al substitution at x = 0.3 resulted in uniform average particle size of 211.8 nm with a narrow particle size distribution, resulting in the lowest reflection loss of −17.62 dB at 8.2 GHz. This research increases the absorption ability of BaFe11.4Mg0.3Al0.3O19 electromagnetic waves up to 98 %. © 2022

关键词： Mechanical alloying

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A multi-physical field coupling modeling incorporated the non-thermal effect: carbothermic reduction of ZnFe2O4 by using microwave heating

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Energy 2025年 328卷

作者： Xiong, Yuandong Qiu, Dejin Li, Ang Omran, Mamdouh Ren, Jie Lu, Chunyang Yao, Hao Li, Manqing Xie, Hao Yu, Yaowei State Key Laboratory of Advanced Special Steel Shanghai Key Laboratory of Advanced Ferrometallurgy School of Materials Science and Engineering Shanghai University 99 Shangda Rd Shanghai China Process Metallurgy Research Group Faculty of Technology University of Oulu Oulu Finland Zhenjiang Innovation and Development Research Institute Nanjing Normal University Zhenjiang China

Microwave heating has recently gained significant attention and is increasingly applied in the pyrometallurgical recovery of Zn (ZnFe2O4) from electric arc furnace dust (EAFD). Under microwave irradiation, a portion of the microwave energy is stored within molecules, enhancing the carbothermic reduction (non-thermal effect). However, quantifying the influence of the non-thermal effect in experiments remains challenging due to the invisibility of microwaves. For advancing the scalability of microwave-assisted EAFD processing, the present study focuses on ZnFe2O4 and develops a multiphysics model incorporating the non-thermal effect to elucidate the enhancement mechanism of microwaves on the reduction process. The main conclusions indicate that increasing microwave input power and graphite addition effectively enhances both the heating and reaction efficiency of the ZnFe2O4-graphite mixture. Higher power input improves efficiency while mitigating thermal runaway risks more effectively than increasing graphite addition. However, the uneven distribution of microwaves leads to localized thermal effects, impacting heating uniformity and overall reaction consistency within the mixture. Furthermore, non-isothermal kinetic analysis reveals that microwave irradiation enhances the carbothermic reduction of ZnFe2O4 through both thermal and non-thermal effects. With a stoichiometric coefficient of 1.2 for graphite addition, localized thermal and non-thermal effects reduce the apparent activation energy by 34.3 % and 25.8 %, respectively. © 2025 Elsevier Ltd

关键词： Activation energy

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The effect of Mg-Al substitution, particle size reduction, and thickness of BaFe12-2xMgxAlxO19 samples on increasing electromagnetic wave absorption

The effect of Mg-Al substitution, particle size reduction, a...

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作者： Yustanti, Erlina Hafidzatul Hakimah, Vini Noviyanto, Alfian Randa, Maulana Manawan, Maykel Department of Metallurgical Engineering Faculty of Engineering Sultan Ageng Tirtayasa University Jl. Jend. Sudirman KM. 03 Banten Cilegon42435 Indonesia Centre of Excellence Nanomaterial and Process Technology Laboratory Faculty of Engineering Sultan Ageng Tirtayasa University Jl. Jend. Sudirman KM. 03 Banten Cilegon42435 Indonesia Advanced Materials Research Group Nano Center Indonesia Banten Jl. PUSPIPTEK Tangerang Selatan15314 Indonesia Department of Mechanical Engineering Mercu Buana University Jl. Meruya Selatan Kebun Jeruk Jakarta11650 Indonesia Research and Development Agency Indonesia Ministry of Defense Jl. Jati No.1 Pondok Labu Jakarta12450 Indonesia Teknologi Daya Gerak Fakultas Teknologi Pertahanan Universitas Pertahanan RI. Kawasan IPSC Sentul Sukahati Kec. Citeureup Jawa Barat Kabupaten Bogor16810 Indonesia

关键词： Mechanical alloying

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development of the Median Tectonic Line Related Shear Zone, Southwest Japan: Analysis of Strain Localization processes

SSRN

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SSRN 2022年

作者： Bui, Van Dong Takeshita, Toru Ando, Jun-Ichi Yamamoto, Takafumi Huang, Wencheng Yeo, Thomas Jing Yi Faculty of Geology VNU University of Science 334 Nguyen Trai Thanh Xuan Hanoi Viet Nam Department of Natural History Sciences Graduate School of Science Hokkaido University Sapporo060-0810 Japan Department of Earth and Planetary Systems Science Hiroshima University Higashi-Hiroshima739-8526 Japan Advanced Process Development Group Technology Development Micron Memory Japan Tsukuba305-8567 Japan Department of Earth and Planetary Science Graduate School of Science The University of Tokyo Tokyo113-0033 Japan

The development of the mylonite zone along the Median Tectonic Line (MTL), southwest Japan, which originated from the Cretaceous granitic rocks, was examined to understand strain localization during cooling. The E-W trending and north-dipping mylonitic rocks, which constitute the upper plate of the north dipping MTL, were derived from two different protoliths: protomylonitic tonalite and mylonitic granite distributed at a distance of c. 0–300 m and 300–700 m from the MTL, respectively. Microstructures and crystallographic preferred orientations (CPOs) of quartz and the two-feldspar thermometry were analyzed to infer the deformation conditions and their spatiotemporal development in the MTL mylonite zone. The mylonitic granite is further divided into southern and northern mylonite zones, which exhibit A- and B-type quartz microstructures formed by subgrain rotation and grain boundary migration recrystallization, respectively. The quartz c -axis CPOs dominantly show a medium-temperature Y -maximum pattern in mylonitic granite and protomylonitic tonalite, with some occurrences of a low temperature type-I crossed-girdle quartz c -axis CPO. The deformation of quartz originally occurred at medium temperatures of 435–490°C in the northern zone, forming mylonitic granite with a B-type quartz microstructure. As temperature decreased, the strain localized into the southern zone to form an A-type quartz microstructure at 355–435°C. The protomylonitic tonalite formed under similar temperature conditions. At temperatures below 355°C, ductile deformation ceased in most parts of granite and tonalite, and only occurred in a very narrow zone up to 50 m wide, forming ultramylonite in direct proximity to the MTL at the brittle–ductile transition conditions in quartz ( c. 300°C). The strain localization occurred not in a single shear zone but in each of the different strands of shear zones comprising the different protoliths. One of the strains developed into the crustal-scale shear zo

关键词： Quartz

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On the use of wood charcoal filler to improve the properties of natural fiber reinforced polymer composites

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Materials Today: Proceedings 2021年 44卷 926-929页

作者： Subrata Chandra Das Sheikh Ashek-E-Khoda Md. Abu Sayeed Suruzzaman Debasree Paul Sajib Aninda Dhar Sotirios A. Grammatikos Advanced and Sustainable Engineering Materials Laboratory Group of Sustainable Composites Department of Manufacturing and Civil Engineering Norwegian University of Science and Technology Gjøvik 2815 Norway Department of Textile Engineering Khwaja Yunus Ali University Sirajgonj Bangladesh Bangabandhu Textile Engineering College Tangail Affiliated by University of Dhaka Bangladesh Department of Textile Engineering Mawlana Bhashani Science and Technology University Tangail 1902 Bangladesh Pilot Plant and Process Development Centre Bangladesh Council of Scientific and Industrial Research Dhaka 1205 Bangladesh

This study aims to analyze the incorporation of widely available, cheap and biobased waste material such as wood charcoal which is used as filler in natural fiber reinforced polymer composites. Jute woven fabric (1 × 1 plain weave) was used as a natural fiber reinforcement, unsaturated polyester resin was used as matrix material, and wood charcoal powder used as bio-filler to manufacture various composite material formulations of 25% fiber weight fraction. The wood charcoal filler loadings were 4, 8, 12, 16 and 20 wt% in the polymer matrix of the composites. The developed composite formulations were tested in terms of mechanical and physicochemical properties. Improved tensile properties were revealed with a 4 wt% filler modification, compared to the reference (unmodified) polymer composite. Nonetheless, further increase of filler (8–20 wt%), led to lower mechanical properties. Thermogravimetric analysis showed increased thermal stability of the 4 wt% charcoal filler modified composite compared to the reference one.

关键词： Natural fibers Natural fillers Biomass resources Wood charcoal fillers Natural fiber composites (NFCs) TGA

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Green Biomaterials: fundamental principles

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Green Biomaterials 2023年第1期1卷

作者： Navid Rabiee Mehmet R. Dokmeci Ali Zarrabi Pooyan Makvandi Mohammad Reza Saeb Hassan Karimi-Maleh Shima Jafarzadeh Ceren Karaman Yusuke Yamauchi Majid Ebrahimi Warkiani Sidi A. Bencherif Geeta Mehta Miharu Eguchi Ajeet Kaushik Mohammad-Ali Shahbazi Ana Cláudia Paiva-Santos Jacek Ryl Eder C. Lima Michael R. Hamblin Rajender S. Varma YunSuk Huh A. T. Ezhil Vilian Piyush Kumar Gupta Sandeep Kumar Lakhera Kavindra Kumar Kesari Yu-Ting Liu Mohammadreza Tahriri Ganji Seeta Rama Raju Mohsen Adeli Ali Mohammadi Jianglin Wang Mohd Zahid Ansari Tejraj Aminabhavi Houman Savoji Gautam Sethi Tomasz Bączek Agata Kot-Wasik Marcela Elisabeth Penoff Abdorreza Mohammadi Nafchi Justyna Kucinska-Lipka Masoumeh Zargar Mohsen Asadnia Amir Reza Aref Moein Safarkhani Milad Ashrafizadeh Reddicherla Umapathi Amir Ghasemi Milica Radisic a Centre for Molecular Medicine and Innovative Therapeutics Murdoch University Perth WA Australiab School of Engineering Macquarie University Sydney New South Wales Australia c Terasaki Institute for Biomedical Innovation (TIBI) Los Angeles CA90024 USA d Department of Biomedical Engineering Faculty of Engineering and Natural Sciences Istinye University Sariyer Istanbul Turkey e The Quzhou Affiliated Hospital of Wenzhou Medical University Quzhou People’s Hospital Zhejiang Quzhou Chinaf School of Engineering Institute for Bioengineering The University of Edinburgh Edinburgh United Kingdom g Department of Polymer Technology Faculty of Chemistry Gdańsk University of Technology Gdańsk Poland h School of Resources and Environment University of Electronic Science and Technology of China 611731 Xiyuan Ave Chengdu P. R. Chinai School of Engineering Lebanese American University Byblos Lebanon j School of Engineering Edith Cowan University Joondalup WA Australia k Department of Electricity and Energy Akdeniz University Antalya Turkey l Australian Institute for Bioengineering and Nanotechnology (AIBN) and School of Chemical Engineering The University of Queensland Brisbane QLD Australiam Department of Materials Process Engineering Graduate School of Engineering Nagoya University Nagoya Japan n School of Biomedical Engineering University of Technology Sydney Sydney NSW Australiao Faculty of Science Institute for Biomedical Materials and Devices (IBMD) University of Technology Sydney Sydney NSW Australia p Chemical Engineering Department Northeastern University Boston MA USAq Department of Bioengineering Northeastern University Boston MA USAr Harvard John A. Paulson School of Engineering and Applied Sciences Harvard University Cambridge MA USA s Department of Biomedical Engineering University of Michigan Ann Arbor MI USAt Department of Materials Science and Engineering University of Michigan Ann Arbor MI USAu Macromolecular Science and Engineering

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Corrigendum to "Priorities to inform research on marine plastic pollution in Southeast Asia" [Sci. Total Environ. volume 841 (2022) Article 156704]

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The Science of the total environment 2023年第PT 3期857卷 159595页

作者： Lucy C M Omeyer Emily M Duncan Kornrawee Aiemsomboon Nicola Beaumont Sujaree Bureekul Bin Cao Luis R Carrasco Suchana Chavanich James R Clark Muhammad R Cordova Fay Couceiro Simon M Cragg Neil Dickson Pierre Failler Gianluca Ferraro Stephen Fletcher Jenny Fong Alex T Ford Tony Gutierrez Fauziah Shahul Hamid Jan G Hiddink Pham T Hoa Sophie I Holland Lowenna Jones Nia H Jones Heather Koldewey Federico M Lauro Charlotte Lee Matt Lewis Danny Marks Sabine Matallana-Surget Claudia G Mayorga-Adame John McGeehan Lauren F Messer Laura Michie Michelle A Miller Zeeda F Mohamad Nur Hazimah Mohamed Nor Moritz Müller Simon P Neill Sarah E Nelms Deo Florence L Onda Joyce J L Ong Agamuthu Pariatamby Sui C Phang Richard Quilliam Peter E Robins Maria Salta Aida Sartimbul Shiori Shakuto Martin W Skov Evelyn B Taboada Peter A Todd Tai Chong Toh Suresh Valiyaveettil Voranop Viyakarn Passorn Wonnapinij Louisa E Wood Clara L X Yong Brendan J Godley Centre for Ecology and Conservation University of Exeter Penryn Campus Penryn Cornwall TR10 9EZ United Kingdom. Electronic address: L.C.M.Omeyer@exeter.ac.uk. Centre for Ecology and Conservation University of Exeter Penryn Campus Penryn Cornwall TR10 9EZ United Kingdom OKEANOS Universidade dos Açores Departamento de Oceanografia e Pescas 9901-862 Horta Portugal. Electronic address: emily.m.duncan@uac.pt. Department of Marine Science Faculty of Science Chulalongkorn University Bangkok 10330 Thailand. Plymouth Marine Laboratory Prospect Place The Hoe Plymouth Devon PL1 3DH United Kingdom. Singapore Centre for Environmental Life Sciences Engineering Nanyang Technological University 637551 Singapore School of Civil and Environmental Engineering Nanyang Technological University 50 Nanyang Avenue 639798 Singapore. Department of Biological Sciences National University of Singapore 14 Science Drive 4 117543 Singapore. Department of Marine Science Faculty of Science Chulalongkorn University Bangkok 10330 Thailand Aquatic Resources Research Institute Chulalongkorn University Bangkok 10330 Thailand. Research Centre for Oceanography Indonesian Institute of Sciences (LIPI) Jalan Pasir Putih 1 Ancol Timur Jakarta 14430 Indonesia Research Centre for Oceanography National Research and Innovation Agency (BRIN) Jalan Pasir Putih 1 Ancol Timur Jakarta 14430 Indonesia. School of Civil Engineering and Surveying Faculty of Technology University of Portsmouth Portsmouth Hampshire PO1 3AH United Kingdom. Institute of Marine Sciences University of Portsmouth Portsmouth Hampshire PO4 9LY United Kingdom Centre for Enzyme Innovation School of Biological Sciences University of Portsmouth Portsmouth Hampshire PO1 2DY United Kingdom. School of Ocean Sciences Bangor University Menai Bridge Anglesey LL59 5AB United Kingdom. Centre for Blue Governance Department of Economics and Finance University of Portsmouth Portsmouth Hampshire PO1 3DE United Kingdom. School of the E

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development of highly active coated monolith SCR catalyst with strong abrasion resistance for low-temperature application

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Frontiers of Environmental Science & Engineering 2015年第6期9卷 979-987页

作者： Lina GAN Shan LEI Jian YU Hongtao MA Yo YAMAMOTO Yoshizo SUZUKI Guangwen XU Zhanguo ZHANG State Key Laboratory of Multiphase Complex Systems Institute of Process Engineering Chinese Academy of Sciences Beijing 100190 China University of Chinese Academy of Sciences Beijing 100049 China Materials Research Department Materials Research Laboratories Research and Development Group Meidensha Corporation 8-1 Osaki 2-Chome Shinagawa-ku Tokyo 141-8565 Japan National Institute of Advanced Industrial Science and Technology (AIST) Onogawa 16-1 Tsukuba 305-8569 Japan

Monolith SCR catalysts coated with V2Os- WO3/TiO2 were prepared by varying binder and coating thickness. Comparing with a monolith extruded with 100% V2O5-WO3/TiO2 powder, a coated monolith with a catalyst-coating layer of 260 μm in thickness exhibited the similar initial NOx reduction activity at 250℃. After 4 h abrasion （attrition） in an air stream containing 300 g. m^-3 fine sands （50-100μm） at a superficial gas velocity of 10m·s^-1, the catalyst still has the activity as a 100% molded monolith does in a 24-h activity test and it retains about 92% of its initial activity at 250℃. Estimation of the equivalent durable hours at a fly ash concentration of 1.0 g.m^-3 in flue gas and a gas velocity of 5 m.s^-1 demonstrated that this coated monolith catalyst is capable of resisting abrasion for 13 months without losing more than 8% of its initial activity. The result suggests the great potential of the coated monolith for application to de-NOx of flue gases with low fly ash concentrations from, such as glass and ceramics manufacturing processes.

关键词： coated monolith low-temperature denitration,abrasion resistance attrition

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