Role of acid sites and surface hydroxyl groups in isophthalonitrile hydrogenation catalyzed by supported Ni–Co catalysts

RSC Advances ◽  
2015 ◽  
Vol 5 (34) ◽  
pp. 26465-26474 ◽  
Author(s):  
Chang Liu ◽  
Ruijun Hou ◽  
Tiefeng Wang

For hydrogenation of isophthalonitrile, the metal sites catalyzed the hydrogenation reactions, while the acid sites (including the original and new ones) and the surface hydroxyl groups catalyzed the condensation side reactions.

2018 ◽  
Vol 235 ◽  
pp. 11-19 ◽  
Author(s):  
Can Wu ◽  
Jingwei Tu ◽  
Chen Tian ◽  
Junjie Geng ◽  
Zhang Lin ◽  
...  

2010 ◽  
Vol 183 (10) ◽  
pp. 2389-2399 ◽  
Author(s):  
Artem V. Marikutsa ◽  
Marina N. Rumyantseva ◽  
Lada V. Yashina ◽  
Alexander M. Gaskov

2021 ◽  
Author(s):  
Gunjoo Kim ◽  
Gihun Kwon ◽  
Hyunjoo Lee

Single atomic Rh catalyst immobilized on zirconia (Rh1/ZrO2) was modified by hydrothermal treatment to have surface hydroxyl groups and used for direct methane oxidation. Both O2 and H2O2 were used...


1985 ◽  
Vol 50 (6) ◽  
pp. 1268-1273 ◽  
Author(s):  
Zdeněk Vít

The effect of surface dehydration on the acidity of silica-alumina and cobalt-molybdenum-alumina catalysts has been studied and compared with alumina. The catalysts were characterized by surface hydroxyl groups concentrations, acid sites concentrations and by catalytic activities in paraldehyde depolymerisation and cumene cracking. It was found that the acidity of alumina and cobalt-molybdenum-alumina catalysts increases significantly with surface dehydration and attains maximum after activation at 500-550 °C. Silica-alumina is strongly acidic even in the hydrated state, the acidity being formed already at relatively low temperature around 100 °C.


2014 ◽  
Vol 118 (25) ◽  
pp. 13578-13589 ◽  
Author(s):  
Rémi Cavallotti ◽  
Jacek Goniakowski ◽  
Rémi Lazzari ◽  
Jacques Jupille ◽  
Alexey Koltsov ◽  
...  

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