Page 292 - Principles of Catalyst Development

INDEX 283

Gas oil, 239 Hydrogenolysis (cont.)
Gelation site selectivity of, 60
of silica sols, 101 sulfur poisoning of, 215
in support preparation, 99 Hydrotreating, 217, 240
Geometric theory, 16, 52 Hydrous oxides
Granules, manufacture of, 130 alumina, 33
Guard beds, 189 mixed, 107
preparation of, 95
Halogenation, 239, 255 silica, 33
Hammett indicators, 168
Heat transfer limited reaction, 239
Heavy metals Ignition loss, 145
contamination by, 218 Impregnation, of the active component, 115,
deactivation of, 219 116
removal of, 219 Infra-red spectroscopy. 157
Heterogeneous catalysis, 7 Ink bottle pores, 155
Hexane isomerization, poisoning of, 209 Insulators. in catalysis, 26, 69
Homogeneous catalysis, 6 Interfacial phenomena, 7
Huit equation, 143 Ion exchange
Hydration, 239, 256 in catalyst preparation, 114
Hydrocarbons, critical diameter of, 79 in zeolites. 75
Hydrocarboxylation, 239 Iron
Hydrocracking, 239 porphorin contamination, 219
dual functionality in, 34 reactions catalyzed by, 62
with metals, 50 Isomerization, 240, 251
with zeolites, 81 by insulators, 27
Hydrodealkylation, 239 Isotope exchange. 240. 258
Hydrodenitrogenation, 239
Hydrodesulfurization, 239
catalyst activation in, 120 Kelvin equation. 152
catalyst functions in, 37 Kerosine, 240
catalyst particle shape and size, 24 Kinetics
deactivation in, 189 activities from. 172
history of, 7 deactivation, 198
on sulfides, 28 differential, 177
Hydroformylation, 7, 240 first-order rate constants, 174
Hydrogels integral, 175
preparation of, 99 Langmuir- Hinshelwood, 174
processing of, 129 Knudsen diffusion, 13, 157
Hydrogen
adsorption, 58
effect of flow on reduction, 118 Langmuir- Hinshelwood
spillover, 34 approximation, 174
transfer, 240, 252 rate equation, 17, 174, 176
Hydrogenation, 240, 253 Langmuir isotherm, 17. 146
of cyclopropane, 55 Legal responsibilities, for catalysts, 133
by metals, 27, 50 Lewis sites, in 'Y-AI20), 33
selective, 27 Lifetime, 240
Hydrogenolysis, 240, 254 testing with pilot units, 46
by metals, 27, 62 Liquefied petroleum gas (LPG), 240
by oxides and sulfides, 27, 70 Liquid hourly space velocity (LHSV), 240