Effect of TiO2Crystalline Phase Composition on the Physicochemical and Catalytic Properties of Pd/TiO2in Selective Acetylene Hydrogenation

2006 ◽  
Vol 110 (15) ◽  
pp. 8019-8024 ◽  
Author(s):  
Joongjai Panpranot ◽  
Kunyaluck Kontapakdee ◽  
Piyasan Praserthdam
Keyword(s):  
Phase Composition ◽  
Catalytic Properties ◽  
Acetylene Hydrogenation

Phase composition, physicochemical and catalytic properties of cobalt–aluminum–zeolite systems

2015 ◽  
Vol 64 (10) ◽  
pp. 2371-2376 ◽  
Author(s):  
E. Yu. Asalieva ◽  
L. V. Sineva ◽  
E. A. Zhukova ◽  
V. Z. Mordkovich ◽  
B. M. Bulychev
Keyword(s):  
Phase Composition ◽  
Catalytic Properties

The effects of the nature of TiO2 supports on the catalytic performance of Rh–Mn/TiO2 catalysts in the synthesis of C2 oxygenates from syngas

2019 ◽  
Vol 9 (14) ◽  
pp. 3675-3685 ◽  
Author(s):  
Jun Yu ◽  
Jihang Yu ◽  
Zhangping Shi ◽  
Qiangsheng Guo ◽  
Xiuzhen Xiao ◽  
...  
Keyword(s):  
Phase Composition ◽  
Crystalline Phase ◽  
Catalytic Properties ◽  
Catalytic Performance

Four types of TiO2 with different rutile/anatase crystalline phase compositions were used as supports, and the effect of the TiO2 phase composition on the catalytic properties of supported Rh catalysts in the synthesis of C2 oxygenates from syngas was studied.

Formation, phase composition, texture and catalytic properties of Co-MgO-Alumino-calcium catalysts in synthesis of hydrocarbons from CO and H

1981 ◽  
Vol 21 (4) ◽  
pp. 213-222
Author(s):  
A LAPIDUS ◽  
I BRUK ◽  
V MALTSEV ◽  
K IEM ◽  
V YAKERSON ◽  
...  
Keyword(s):  
Phase Composition ◽  
Catalytic Properties ◽  
Calcium Catalysts ◽  
Formation Phase

Study of Structural and Catalytic Properties of Pt/WOх/ZrO₂, Modified by Lanthanum Cations

2020 ◽  
pp. 133-141
Author(s):  
Svetlana A. Naumova ◽  
Anastasia V. Obukhova ◽  
Ludmila I. Kuznetsova
Keyword(s):  
Solid Solution ◽  
Catalytic Activity ◽  
Phase Composition ◽  
Structural Properties ◽  
Catalytic Properties ◽  
Surface Layers ◽  
Tetragonal Modification ◽  
Nanocrystalline Zirconia ◽  
Positive Effect

The effect of the addition of La3+ cations on the structural properties of Pt/WOх/ZrO₂ catalysts and the characteristics of catalytic activity in the process of hydroisomerization of n-heptane and benzene mixture was studied. The phase composition of the catalysts is represented by a solid solution of lanthanum cations in nanocrystalline zirconia of tetragonal modification with localization of lanthanum in the surface layers predominantly. The positive effect of La3+ additives on the selectivity and yield of isomerized products was shown

Enhancement of Metal Dispersion and Selective Acetylene Hydrogenation Catalytic Properties of a Supported Pd Catalyst

2011 ◽  
Vol 50 (4) ◽  
pp. 1947-1954 ◽  
Author(s):  
Jun-Ting Feng ◽  
Xiao-Yan Ma ◽  
David G. Evans ◽  
Dian-Qing Li
Keyword(s):  
Catalytic Properties ◽  
Pd Catalyst ◽  
Metal Dispersion ◽  
Acetylene Hydrogenation ◽  
Supported Pd

Catalytic properties of reduced graphene oxide in acetylene hydrogenation

Carbon ◽  
2020 ◽  
Vol 157 ◽  
pp. 277-285 ◽  
Author(s):  
A.A. Abakumov ◽  
I.B. Bychko ◽  
O.V. Selyshchev ◽  
D.R.T. Zahn ◽  
Xiaohua Qi ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Catalytic Properties ◽  
Acetylene Hydrogenation ◽  
Reduced Graphene

scholarly journals Thermodynamic reassessment of Au-Pt-Sn system

2021 ◽  
Author(s):  
Jie-Qiong Hu ◽  
Ming Xie ◽  
Yongtai Chen ◽  
Jiheng Fang ◽  
Qiao Zhang
Keyword(s):  
Experimental Data ◽  
Phase Diagram ◽  
Phase Composition ◽  
Ternary System ◽  
First Principles ◽  
Catalytic Properties ◽  
Calphad Method ◽  
First Principles Calculations ◽  
Formation Enthalpies ◽  
Equilibrium Structures

Abstract Au-Pt-Sn alloys are a novel class of materials with promising catalytic properties. This study provides updated information on phase equilibrium structures and thermodynamics of the Au-Pt-Sn ternary system. The formation enthalpies of Au-Sn and Pt-Sn binary subsystems were predicted by first principles calculations and these values were further refined by CALPHAD method. The results obtained accurately reproduced the experimental data. The reassessed phase diagram of the Au-Pt-Sn ternary system accurately described the phase composition of several Au-Pt-Sn alloys, which is essential for further modifications of these materials.

Phase composition and catalytic properties of ZrO2 and CeO2-ZrO2 in the ketonization of pentanoic acid to 5-nonanone

2013 ◽  
Vol 54 (2) ◽  
pp. 184-192 ◽  
Author(s):  
A. A. Shutilov ◽  
M. N. Simonov ◽  
Yu. A. Zaytseva ◽  
G. A. Zenkovets ◽  
I. L. Simakova
Keyword(s):  
Phase Composition ◽  
Catalytic Properties ◽  
Pentanoic Acid

Effect of the Method of Synthesis, Forming, and Activation on the Catalytic Activity of Vanadium-Phosphorus Catalysts

1993 ◽  
Vol 58 (5) ◽  
pp. 1007-1012 ◽  
Author(s):  
Milan Brutovský ◽  
Lucia Ferdinandyová ◽  
Štefan Gerej ◽  
Ján Novák
Keyword(s):  
Catalytic Activity ◽  
Phase Composition ◽  
Maleic Anhydride ◽  
Partial Oxidation ◽  
Temperature Regime ◽  
Catalytic Properties ◽  
Active Catalyst ◽  
Catalyst Activity ◽  
Gas Atmosphere ◽  
Condensed Phosphates

Methods where vanadium in the precursor is reduced to V4+ in solution are well suited to the synthesis of vanadium-phosphorus catalyst because the high temperatures (500 to 800 °C) required to transform the precursor to the active catalyst are thus avoid, which is desirable from the chemical as well as structuro-physical aspects. The way of forming and activating the catalyst, i.e. the temperature regime of the treatment and the kind of the gas atmosphere, were found to affect appreciably the catalyst activity in the partial oxidation of butane to maleic anhydride.. Forming procedures resulting in sufficiently fine crystals and optimized lattice defects are suitable. The application of synthesis, forming and activation procedures exhibiting a low tendency to form, in the catalyst phase composition, condensed phosphates such as VO(PO3)2 or even V(PO3)3 is also beneficial to the catalyst activity. The catalytic properties of the vanadium-phosphorus catalyst which was prepared in concentrated HCl were improved considerably by doping the lattice with modifying metal cations.

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