نتایج جستجو برای: propene

تعداد نتایج: 789  

Journal: :Physical chemistry chemical physics : PCCP 2011
Friederike Agel Fee Pitsch Florian Felix Krull Peter Schulz Matthias Wessling Thomas Melin Peter Wasserscheid

Properties of the room-temperature liquid complex salt [Ag(propene)(x)][Tf(2)N] have been studied to probe its suitability for acting as active separation layer in immobilised liquid membrane (ILM) concepts for propane/propene separation. The pressure/temperature range of complex formation has been determined and the thermal properties of Ag[Tf(2)N] and [Ag(propene)(x)][Tf(2)N] have been studie...

Journal: :iranian journal of catalysis 2014
yousef zeinaly seyed mehdi alavi

supported vanadia catalyst was successfully synthesized using wet impregnation of gamma-alumina to study propane oxidative dehydrogenation (pod). the prepared catalysts were characterized with xrd, bet, and tpr tests. in a broad temperature range (340 to 630°c), effects of vanadia loading (2.7, 5.4, and 9 wt%) and propane to oxygen ratio (3/1 to 1/3) were investigated on propane conversion as w...

Journal: :The journal of physical chemistry. A 2009
Lam K Huynh Hongzhi R Zhang Shaowen Zhang Eric Eddings Adel Sarofim Matthew E Law Phillip R Westmoreland Thanh N Truong

Kinetics of enol generation from propene has been predicted in an effort to understand the presence of enols in flames. A potential energy surface for reaction of OH with propene was computed by CCSD(T)/cc-pVDZ//B3LYP/cc-pVTZ calculations. Rate constants of different product channels and branching ratios were then calculated using the Master Equation formulation (J. Phys. Chem. A 2006, 110, 105...

2009
T. Alexander Nijhuis J. Chen Jaap C. Schouten

Gold-titania based catalysts for the direct epoxidation of propene provide a clean and simple route for future propene oxide producing processes. These catalysts, producing propene oxide in a single step, have a moderate activity and a very high selectivity towards propene oxide. However, the hydrogen, which is used as a co-reactant, is used less efficient. To be able to improve the hydrogen ef...

2002
T. Ressler J. Wienold R. E. Jentoft T. Neisius

Reduction of MoO3 in propene and oxidation of MoO2 in oxygen are investigated by in situ X-ray diffraction (XRD) and Xray absorption spectroscopy (XAS). Temperature-programmed and isothermal experiments (573–773 K) are performed to elucidate the structural evolution of phases present during the reactions and, in addition, to reveal the solid-state kinetics of the processes involved. During the ...

Journal: :Angewandte Chemie 2012
Youn-Sang Bae Chang Yeon Lee Ki Chul Kim Omar K Farha Peter Nickias Joseph T Hupp SonBinh T Nguyen Randall Q Snurr

Crystalline metal–organic frameworks (MOFs) have attracted great attention in the past decade due to their modular, tailorable structures, as well as their potential in applications such as gas storage and separations. Open metal sites in some MOFs provide special adsorption sites, which are favorable for H2 storage, [4] CO2 capture, [5] and CO2 separations. Propene is an important commercial p...

Seyed Mehdi Alavi, Yousef Zeinaly

Supported vanadia catalyst was successfully synthesized using wet impregnation of gamma-Alumina to study Propane Oxidative Dehydrogenation (POD). The prepared catalysts were characterized with XRD, BET, and TPR tests. In a broad temperature range (340 to 630°C), effects of vanadia loading (2.7, 5.4, and 9 wt%) and propane to oxygen ratio (3/1 to 1/3) were investigated on propane conversion as w...

Seyed Mehdi Alavi, Yousef Zeinaly

Supported vanadia catalyst was successfully synthesized using wet impregnation of gamma-Alumina to study Propane Oxidative Dehydrogenation (POD). The prepared catalysts were characterized with XRD, BET, and TPR tests. In a broad temperature range (340 to 630°C), effects of vanadia loading (2.7, 5.4, and 9 wt%) and propane to oxygen ratio (3/1 to 1/3) were investigated on propane conversion as w...

2005
T. Ressler O. Timpe F. Girgsdies J. Wienold T. Neisius

The bulk structural evolution of a vanadium containing heteropolyoxomolybdate (HPOM), H4[PVMo11O40] * 13 H2O, with vanadium substituting for Mo in the Keggin ion was studied under reducing (propene) and partial oxidation reaction conditions (propene and oxygen) by in situ X-ray diffraction (XRD) and X-ray absorption spectroscopy (XAS) combined with mass spectrometry. During treatment in propene...

Journal: :physical chemistry and electrochemistry 0

propene dissociation channels were characterized by ab initio ccsd(t)/6-311++g(d,p) calculations. inthis work the detailed mechanism of propene dissociation to c2h4+ch2, c2h2+h+ch3, c2h2+ch4 andc3h3+h2+h have been investigated. according to our calculations, ten fragments can be classified intofive dissociated channels. our results point out that two mechanisms come into play in the h2 eliminat...

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