ISOMERIZATION OF XYLENES USING ZEOLITE CATALYSTS

被引：82

作者：

LANEWALA, MA

BOLTON, AP

机构：

[1] Union Carbide Corporation, Linde Divisio, Molecular Sieve Department, Tonawanda

来源：

JOURNAL OF ORGANIC CHEMISTRY | 1969年 / 34卷 / 10期

关键词：

D O I：

10.1021/jo01262a069

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

The isomerization of the xylenes, catalyzed by partially multivalent metal cation exchanged, partially decationized Type Y zeolites,is invariably accompanied by transalkylation, and the degree of isomerization is proportional to the extent of transalkylation. An equilibrium distribution of the xylenes is obtained when over 50% transalkylation has occurred in agreement with calculated values. Data from the transalkylation of the trimethylbenzenes with benzene indicated that this reaction proceeds via a bimolecular mechanism. Such a mechanism, involving a diphenylalkane-type transition state, is proposed for xylene isomerization and satisfactorily accounts for the observed results. © 1969, American Chemical Society. All rights reserved.

引用

收藏

页码：3107 / &

相关论文

共 13 条

[1] KINETICS OF 3-COMPOUND EQUILIBRATIONS .2. THE ISOMERIZATION OF XYLENE [J].

ALLEN, RH ;

YATS, LD .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1959, 81 (20) :5289-5292

[2] KINETICS OF 3-COMPOUND EQUILIBRATIONS .4. THE ISOMERIZATION OF ALKYLAROMATICS [J].

ALLEN, RH .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1960, 82 (18) :4856-4858

[3] KINETICS OF 3-COMPOUND EQUILIBRATIONS .3. THE ISOMERIZATION OF ETHYLTOLUENE [J].

ALLEN, RH ;

YATS, LD ;

ERLEY, DS .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1960, 82 (18) :4853-4856

[4] ISOMERIZATION OF T-BUTYLPHENOLS USING ZEOLITE CATALYSTS [J].

BOLTON, AP ;

LANEWALA, MA ;

PICKERT, PE .

JOURNAL OF ORGANIC CHEMISTRY, 1968, 33 (09) :3415-&

[5] ISOMERIZATION OF DIETHYLBENZENES USING ZEOLITE CATALYSTS [J].

BOLTON, AP ;

LANEWALA, MA ;

PICKERT, PE .

JOURNAL OF ORGANIC CHEMISTRY, 1968, 33 (04) :1513-&

[6] THE ISOMERIZATION OF ORTHO-XYLENES AND PARA-XYLENES AND SOME RELATED ALKYLBENZENES UNDER THE INFLUENCE OF HYDROGEN BROMIDE AND ALUMINUM BROMIDE - THE RELATIVE ISOMERIZATION APTITUDES OF ALKYL GROUPS [J].

BROWN, HC ;

JUNGK, H .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1955, 77 (21) :5579-5584

[7] SOLID COMPLEXES OF ALUMINUM BROMIDE WITH AROMATIC HYDROCARBONS [J].

CHOI, SU ;

BROWN, HC .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1966, 88 (05) :903-&

[8]

HOUGEN OA, 1959, CHEMICAL PROCESS P 2, P1001

[9]

LIEN AP, 1952, J AM CHEM SOC, V74, P6246

[10] HYDROGEN TRANSFER .6. REACTION OF 1,3-DIMETHYL-4-ETHYLBENZENE AND ETHYLMESITYLENE WITH METHYLCYCLOHEXENE - TRANSARALKYLATION REACTION OF DIARYLETHANES [J].

PINES, H ;

ARRIGO, JT .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1958, 80 (16) :4369-4378