The Effect of Zeolite Structure on the Activity and Selectivity in p-Xylene Alkylation with Isopropyl Alcohol

被引：9

作者：

Musilova-Pavlackova, Zuzana ^{[1
]}

Kubu, Martin ^{[1
]}

Burton, Allen W. ^{[2
]}

Zones, Stacey I. ^{[2
]}

Bejblova, Martina ^{[1
]}

Cejka, Jiri ^{[1
]}

机构：

[1] Acad Sci Czech Republic, J Heyrovsky Inst Phys Chem, VVI, CR-18223 Prague 8, Czech Republic

[2] Chevron Energy & Technol Co, Richmond, CA 94802 USA

来源：

CATALYSIS LETTERS | 2009年 / 131卷 / 3-4期

关键词：

SSZ-35; SSZ-33; p-Xylene; Alkylation; 2,5-Dimethyl cumene (1-isopropyl-2,5-dimethyl-benzene); MOLECULAR-DYNAMICS; CONSTRAINT INDEX; FORCE-FIELD; TOLUENE; SSZ-33; ZSM-5; ACID; DISPROPORTIONATION; ISOMERIZATION; CATALYSIS;

D O I：

10.1007/s10562-009-0039-3

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The effect of zeolite architecture and channel dimensionality on p-xylene conversion and selectivity to 1-isopropyl-2,5-dimethyl-benzene was investigated in p-xylene alkylation with isopropyl alcohol over novel zeolites SSZ-33 and SSZ-35. Catalytic behavior of these zeolites was compared with those of zeolites Beta, mordenite, ZSM-11 and ZSM-5. It was found that p-xylene conversion increases with increasing pore size and connectivity of the channel system of individual zeolites with the exception of SSZ-35, which possesses a system of one-dimensional 10-ring channels that periodically open into wide, shallow cavities circumscribed by 18-rings. SSZ-35 exhibited the highest conversion among all zeolites at the reaction temperature of 150 degrees C and also the highest selectivity to 1-isopropyl-2,5-dimethyl-benzene. Molecular modeling confirmed the dimensions of the 18-ring cages are optimal for the formation of this alkylation product.

引用

页码：393 / 400

页数：8

共 30 条

[21] UFF, A FULL PERIODIC-TABLE FORCE-FIELD FOR MOLECULAR MECHANICS AND MOLECULAR-DYNAMICS SIMULATIONS
RAPPE, AK
CASEWIT, CJ
COLWELL, KS
GODDARD, WA
SKIFF, WM
[J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1992, 114 (25) : 10024 - 10035
[22] APPLICATION OF A UNIVERSAL FORCE-FIELD TO METAL-COMPLEXES
RAPPE, AK
COLWELL, KS
CASEWIT, CJ
[J]. INORGANIC CHEMISTRY, 1993, 32 (16) : 3438 - 3450
[23] Disproportionation and transalkylation of alkylbenzenes over zeolite catalysts
Tsai, TC
Liu, SB
Wang, IK
[J]. APPLIED CATALYSIS A-GENERAL, 1999, 181 (02) : 355 - 398
[24] Guest/host relationships in the synthesis of the novel cage-based zeolites SSZ-35, SSZ-36, and SSZ-39
Wagner, P
Nakagawa, Y
Lee, GS
Davis, ME
Elomari, S
Medrud, RC
Zones, SI
[J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2000, 122 (02) : 263 - 273
[25] MECHANISM OF N-PROPYLTOLUENE FORMATION IN C3 ALKYLATION OF TOLUENE - THE EFFECT OF ZEOLITE STRUCTURAL TYPE
WICHTERLOVA, B
CEJKA, J
[J]. JOURNAL OF CATALYSIS, 1994, 146 (02) : 523 - 529
[26] A COMPARISON OF THE ETHYLATION OF ETHYLBENZENE AND TOLUENE ON ACID, CATIONIC AND SILYLATED ZSM-5 ZEOLITES
WICHTERLOVA, B
CEJKA, J
[J]. CATALYSIS LETTERS, 1992, 16 (04) : 421 - 429
[27] Selective synthesis of cumene and p-cymene over Al and Fe silicates with large and medium pore structures
Wichterlova, B
Cejka, J
Zilkova, N
[J]. MICROPOROUS MATERIALS, 1996, 6 (5-6): : 405 - 414
[28] Indirect assessment of unknown zeolite structures through inference from zeolite synthesis comparisons coupled with adsorption and catalytic selectivity studies
Zones, S. I.
Chen, C. Y.
Corma, A.
Cheng, M. T.
Kibby, C. L.
Chan, I. Y.
Burton, A. W.
[J]. JOURNAL OF CATALYSIS, 2007, 250 (01) : 41 - 54
[29] Zones S. I., 1990, U.S. Patent, Patent No. 4963337
[30] The Constraint Index test revisited: anomalies based upon new zeolite structure types
Zones, SI
Harris, TV
[J]. MICROPOROUS AND MESOPOROUS MATERIALS, 2000, 35-6 : 31 - 46

← 1 2 3 →