A versatile wet impregnation method was employed to conveniently and controllably deposit Fe_2O_3 nanoparticles on zeolites including commercial Y, mordenite and ZSM-5 with the similar framework Si/Al ratios and cryst...
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A versatile wet impregnation method was employed to conveniently and controllably deposit Fe_2O_3 nanoparticles on zeolites including commercial Y, mordenite and ZSM-5 with the similar framework Si/Al ratios and crystal sizes, respectively. The ultrafine Fe_2O_3 nanoparticles in size of 5 nm can be highly dispersed on zeolite Y matrix due to its much better wettability than ZSM-5 and mordenite. By using the obtained Fe_2O_3/zeolite composite as the heterogeneous Fenton-like catalysts, the degradation of phenol as a model reaction was systematically investigated, including the zeolite supports, particle size and dispersion of Fe_2O_3, and reaction conditions of H_2O_2 concentration, temperature, and pH value. The catalyst based on zeolite Y with Fe loading of 9% exhibited the best phenol degradation efficiency (> 90%)in neutral pH within 2 h. Its high catalytic activity in Fenton reaction can be attributed to the bifunctional properties of strong surface BrФnsted acidity and high reactivity of octahedral Fe^(3+) in the highlydispersed ultrafine Fe_2O_3 nanoparticles in size of 5 nm, which were the primary active centers to quickly decompose H_2O_2 into hydroxyl radicals. Since phenol degradation can be performed under mild conditions of ambient temperature (283-323 K) and a wide pH range (4.0-7.0), the catalysts can be easily recovered for recyclable use with stable degradation activity, which own the immense potential in deep treatment of organic pollutants in industrial wastewater.
With the combination of the characteristics of Command and Control, optimum C2 network model, which is based on complex network topology optimization theory and NSGA-II Algorithm, is set up so as to search the constru...
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In this paper, we present a seventh-order convergent Newton-type method for solving nonlinear equations which is free from second derivative. At each iteration it requires three evaluations of the given function and t...
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The engine is an important component of armored vehicles, and effective detection of the engine status is an important guarantee for the vehicle and the personnel on board. The lubricating oil information can effectiv...
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The mainstream method for cuffless blood pressure is that based on pulse transit time. However, there are many inconveniences in this method such as requiring simultaneous measurement of electrocardiogram and photople...
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Personalized recommendation plays an important role in both e-commerce area and information filtering area. The neighborhood based collaborative filtering algorithm has already been used successfully. However, with th...
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Quantum secure direct communication(QSDC)is a unique technique,which supports the secure transmission of confidential information directly through a quantum channel without the need for a secret key and for *** this s...
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Quantum secure direct communication(QSDC)is a unique technique,which supports the secure transmission of confidential information directly through a quantum channel without the need for a secret key and for *** this secure communication protocol fundamentally differs from its conventional *** this article,we report the first measurement-deviceindependent(MDI)QSDC protocol relying on sequences of entangled photon pairs and single ***,it eliminates the security loopholes associated with the measurement ***,this MDI technique is capable of doubling the communication distance of its conventional counterpart operating without using our MDI *** also conceive a protocol associated with linear optical Bell-basis measurements,where only two of the four Bell-basis states could be *** the number of qubits in a sequence reduces to 1,the MDI-QSDC protocol degenerates to a deterministic MDI quantum key distribution protocol.
IT Governance are one of the needs in managing Enterprise Level IT. This study shows part of the decision domain of IT Governance Help, which are IT Investment and Prioritization. The purpose of this study is to deter...
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This paper proposes an Agent based Context aware Image Fusion for Military sensor networks (ACIF-MSN) to form an improved infrastructure for multi-sensor image fusion. This paper considers three contexts namely tempor...
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In this paper we present an instrument to measure success of collaboration. The instrument offers metrics to measure success of collaboration along six dimensions;efficiency, effectiveness, productivity, satisfaction ...
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