Studies on the Mechanism of the Direct Synthesisof Styrene form Benzene and Ethylene

Chemical Research in Chinese Universities ›› 1997, Vol. 13 ›› Issue (3): 244-248.

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Studies on the Mechanism of the Direct Synthesisof Styrene form Benzene and Ethylene

ZHANG Qiang¹, JIN Ri-guang¹, YANG Jun²

1. College of Mater, Sci, and Tech, Beijing Univ, of Them, Beijing, 100029;
2. Dept. of Phys, Chem, Shenyang Pharmaceutical Univ., Shenyang, 110015

Received:1996-05-10 Online:1997-08-24 Published:2011-08-17
Supported by:
Supported by the State Key Laboratory Catalysis Foundation of Dalian Institute of Chemical Physics.

Abstract

Abstract: The adsorption behavior and description behavior of benzene, ethylene and ethylbenzene over HZSM-5 and Co/HZSM-5 catalysts were studied by means of TPSR (Temperature programmed surface reaction) technique. TPSR results of ben- zene and ethylene co-adsorption show that the maian products are styrene, ethylben- zene, toluene, propane, and butane. In a separate experiment of ethylbenzene ad- sorption, styrene . toluene and benzene are formed due to cracking and dehydro- genation. The mechanism of styrene formation was proposed, i. e., the reaction was carried out via. the dehydrogenation of mediate species ethylbenzene according to the results of TPSR-MS, activity testing and thermodynamic analysis.

Key words: Direct synthesis, TPSR-MS, Styrene, Benzene, Ethylene

ZHANG Qiang, JIN Ri-guang, YANG Jun . Studies on the Mechanism of the Direct Synthesisof Styrene form Benzene and Ethylene[J]. Chemical Research in Chinese Universities, 1997, 13(3): 244-248.

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Studies on the Mechanism of the Direct Synthesisof Styrene form Benzene and Ethylene

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