Page 297 - Principles of Catalyst Development

288 INDEX

Texture W ashcoat, 123
features of, 9 Washing
parameters, to after deposition, III
Theoretical density, 141 of hydrogels, 102
Thermodynamics Wicke-Kallenback method, 155
in catalyst design, 87 Weight hourly space velocity (WHSV), 242
effect of catalysts, I
feasibility from, 3 Xerogels
Thiele modulus, 13, 203 pellet formation from, 104
Ti0 2 , for CH 4 oxidation, 91 preparation of. 102
Toluene disproportionation, 80 X-ray diffraction (XRD)
Tortuosity, 13, 155, 157 particle size determination, 159
Toxicity phase identification, 139
of metals, 206 X-ray fluorescence, 137
of nonmetals, 206 X-ray photon spectroscopy, 161
Transalkylation, 242 Xylene isomerization, 80
Transmission electron microscopy (TEM), 158
Turnover number, 173 Yield, 242

Ultraviolet photon spectroscopy (UPS), 161 Zeolites
Ultraviolet spectroscopy, 157 coking on, 211
Unit operations, in catalyst manufacturing, 125 origin of, 74
Urea, for precipitatIOn, 110 preparation of, 108
structure of, 76
Vanadium, porphorin contamination, 219 Zeta potential, in preparation, 100
Visbreaking, 242 ZnO, for CH 4 oxidation, 91
V 205, for CH 4 oxidation ZnTi0 3 , for CH4 oxidation, 91
Volcano curves, 16, 17, 53, 55 ZSM-5
Vol' ken stein theory, 68 shape selectivity in, 80
Voorhies c4uation, 212 structure of, 77