scholarly journals Effect of Ni atomic percent on Ni dispersion and catalytic activity in preparation of catalysts from La-Ni intermetallic compounds.

1986 ◽  
Vol 19 (5) ◽  
pp. 375-379
Author(s):  
TADASHI SHIROTSUKA ◽  
KAORU ONOE ◽  
AYUMU YOKOYAMA
Keyword(s):  
Catalytic Activity ◽  
Intermetallic Compounds ◽  
Atomic Percent

Intermetallic Compounds as Catalysts in the Reaction of Electroevolution/Absorption of Hydrogen

2015 ◽  
Vol 228 ◽  
pp. 16-22 ◽  
Author(s):  
Bożena Łosiewicz ◽  
Magdalena Popczyk ◽  
Iwona Napłoszek ◽  
A. Budniok
Keyword(s):  
Catalytic Activity ◽  
Synergistic Effect ◽  
Intermetallic Compounds ◽  
Electrode Materials ◽  
Precious Metals ◽  
Intermetallic Phases ◽  
Electrochemical Process ◽  
Electrocatalytic Properties ◽  
Absorption Of Hydrogen

This work deals with selected aspects of the formation of intermetallic phases and the occurrence of a synergistic effect in the electrochemical process taking place at such electrode materials. A comparison of the catalytic activity of a variety of metals and intermetallic compounds in the reaction of hydrogen electroevolution and absorption was carried out. It has been found that the catalytic activity of such combinations is much higher than the activity of their individual components and quite often also of precious metals. This paper is also aimed at understanding the electrocatalytic properties of electrodes based on the concept of “activity descriptors”. What is also discussed is the ability of different metals and intermetallic compounds to store hydrogen.

Nanoporous (Pt1−xFex)3Al intermetallic compounds for greatly enhanced oxygen electroreduction catalysis

2016 ◽  
Vol 4 (48) ◽  
pp. 18878-18884 ◽  
Author(s):  
Tuo Cheng ◽  
Xing-You Lang ◽  
Gao-Feng Han ◽  
Rui-Qi Yao ◽  
Zi Wen ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Intermetallic Compound ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Intermetallic Compounds ◽  
Reduction Reaction ◽  
Oxygen Electroreduction

Here we report a nanoporous (Pt1−xFex)3Al intermetallic compound exhibiting impressive electroreduction catalytic activity and durability for the oxygen reduction reaction.

scholarly journals Etching of the intermetallic compounds PdGa and Pd3Ga7: An effective way to increase catalytic activity?

2009 ◽  
Vol 264 (2) ◽  
pp. 93-103 ◽  
Author(s):  
Kirill Kovnir ◽  
Jürgen Osswald ◽  
Marc Armbrüster ◽  
Detre Teschner ◽  
Gisela Weinberg ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Intermetallic Compounds

Catalytic Activity of Intermetallic Compounds in the Gas Phase Reduction of Nitrobenzene.

1939 ◽  
Vol 43 (6) ◽  
pp. 805-807
Author(s):  
O. W. Brown ◽  
J. B. Borland ◽  
R. A. Johnston ◽  
R. C. Grills
Keyword(s):  
Catalytic Activity ◽  
Gas Phase ◽  
Intermetallic Compounds ◽  
Phase Reduction

In-situ observation of the crystal structure transition of Pt-Sn intermetallic nanoparticles during deactivation and regeneration

2021 ◽  
Author(s):  
Ze-Qi Zhang ◽  
Yuchen Pei ◽  
Mingjun Xiao ◽  
Guowen Hu ◽  
Zhi-Peng Huang ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Catalytic Activity ◽  
Intermetallic Compounds ◽  
In Situ Observation ◽  
Structure Transition ◽  
Atomic Structures ◽  
Intermetallic Nanoparticles

Intermetallic compounds nanoparticles (iNPs) have attracted great attention as efficient catalysts for improved activity and selectivity. As the catalytic activity of the iNPs is strongly associated with their atomic structures,...

scholarly journals A Comparative Discussion of the Catalytic Activity and CO2-Selectivity of Cu-Zr and Pd-Zr (Intermetallic) Compounds in Methanol Steam Reforming

Catalysts ◽  
2017 ◽  
Vol 7 (12) ◽  
pp. 53 ◽  
Author(s):  
Norbert Köpfle ◽  
Lukas Mayr ◽  
Daniela Schmidmair ◽  
Johannes Bernardi ◽  
Axel Knop‐Gericke ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Intermetallic Compounds ◽  
Steam Reforming ◽  
Methanol Steam Reforming ◽  
Co2 Selectivity

High resolution electron microscopy of lanthanum phosphate crystals

1978 ◽  
Vol 36 (1) ◽  
pp. 274-275
Author(s):  
J. C. Wheatley ◽  
J. M. Cowley
Keyword(s):  
Electron Microscopy ◽  
Catalytic Activity ◽  
High Resolution ◽  
Petroleum Industry ◽  
High Resolution Electron Microscopy ◽  
Lanthanum Phosphate ◽  
Good Catalyst ◽  
Resolution Electron ◽  
Good Catalytic Activity ◽  
Physical And Chemical

Rare-earth phosphates are of particular interest because of their catalytic properties associated with the hydrolysis of many aromatic chlorides in the petroleum industry. Lanthanum phosphates (LaPO4) which have been doped with small amounts of copper have shown increased catalytic activity (1). However the physical and chemical characteristics of the samples leading to good catalytic activity are not known.Many catalysts are amorphous and thus do not easily lend themselves to methods of investigation which would include electron microscopy. However, the LaPO4, crystals are quite suitable samples for high resolution techniques.The samples used were obtained from William L. Kehl of Gulf Research and Development Company. The electron microscopy was carried out on a JEOL JEM-100B which had been modified for high resolution microscopy (2). Standard high resolution techniques were employed. Three different sample types were observed: 669A-1-5-7 (poor catalyst), H-L-2 (good catalyst) and 27-011 (good catalyst).

The design and catalytic performance of molybdenum active sites on an MCM-41 framework for the aerobic oxidation of 5-hydroxymethylfurfural to 2,5-diformylfuran

2019 ◽  
Vol 9 (3) ◽  
pp. 811-821 ◽  
Author(s):  
Zhao-Meng Wang ◽  
Li-Juan Liu ◽  
Bo Xiang ◽  
Yue Wang ◽  
Ya-Jing Lyu ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Active Sites ◽  
Aerobic Oxidation ◽  
Catalytic Performance ◽  
Mcm 41

The catalytic activity decreases as –(SiO)3Mo(OH)(O) > –(SiO)2Mo(O)2 > –(O)4–MoO.

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