490
Index
X
X ray diffraction (XRD), 14, 15, 47,
87, 186, 283, 434
X ray fluorescence (XRF), 14, 15
Xylenes
isomerization, 293, 294
oxidation, 120, 142–143,
292–295, 447, 467
Y
Yield, 6, 7, 25, 32, 40, 46, 51, 55,
57, 59–61, 65, 88, 104, 120, 121,
131, 136, 137, 139, 141, 144, 145,
148, 150, 158, 159, 161, 177, 178,
180, 184, 189–193, 196, 197,
199, 200, 208, 211–213, 238,
242–248, 251, 254, 255, 257,
262, 265, 267–269, 273–275,
277, 279, 285, 291, 294, 295,
299, 306, 319, 323, 335
Z
Zeolite catalysts
FCC catalyst composition, 188,
190
increased use of zeolites, 190–191
increased yields, 184, 189, 192
introduction, 172, 184
ion exchange/active sites,
189–190, 236, 451
Lowenstein’s rules, 186, 187
pentasils-ZSM, 187
rare earth, 175, 186, 189, 190,
199, 208
regular 3D structure, 185
REY catalysts
SiO
2
/Al
2
O
3
acidity, 186
sodalite/super cages, 185–187,
189
unit cell size (UCS), 186
Y zeolite structure, 185
Zeolites
acidity, 186, 187, 232, 293
activity, 6, 169, 173, 184,
189, 191, 202, 234, 293, 451
cracking catalysts, 10, 175,
190–192, 197, 235, 253
faujacite, 185
matrix, 6, 173, 175, 177, 184,
188, 189, 191–193, 199, 202,
203, 208
structures, 185, 202, 451, 462
synthesis, 183, 254
templates, 188, 189, 195
zeolites X,Y, 175, 182, 185–190,
192–196, 198, 235–237
ZSM-5, 187–189, 197, 198, 208,
254, 255, 451, 463
Ziegler brown Ticl
3
aluminium co-catalyst, 315
deashing, 316
preparation, 315
stereospecific, 315
Ziegler Natta catalysts
brown/violet Ticl
3
, 314–319
deashing, 314, 316, 318, 319
isotactic/atactic polymer, 314,
316–318, 321
molecular weight, 315, 319, 320
range of polymers, 319
supported titanium catalysts, 315
Zinc oxide catalysts
desulphurization, 354, 363
high pressure methanol, 85, 86,
421–423
low pressure methanol, 88, 425,
426, 431, 433
low temperature shift, 87, 384