ZEOLITE CATALYZED ALKYLATION OF TOLUENE BY ALCOHOL

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SHEIKHOSLAMY F.; YARI M.; AHZAN K.

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Journal: JOURNAL OF PHYSICAL AND THEORETICAL CHEMISTRY Year:2011 | Volume:7 | Issue:4 Page(s): 221-233

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Information Journal Paper

Title

ZEOLITE CATALYZED ALKYLATION OF TOLUENE BY ALCOHOL

Author(s)

SHEIKHOSLAMY F. | YARI M. | AHZAN K. | Issue Writer Certificate

Keywords

TOLUENE ALKYLATIONQ3

2-PROPANOLQ3

H3PO4Q2

MODIFIED ZSM-5Q3

CYMENEQ3

XYLENEQ2

CATALYSTQ2

Abstract

Vapor-phase methylation of toluene using methanol and its isopropylation with 2-PROPANOL has been investigated in a down flow reactor under atmospheric conditions using N2 carrier over a series of surface modified and unmodified ZSM-5 (Si/Al=60–170) loaded with H3PO4, differing in the external surface treatment of the zeolites.The feed molar ratios of toluene/methanol and toluene/2-propanol were varied over a wide range (8–0.125), and the optimum feed ratio of toluene/alcohol was less than 0.5 in both cases. Space velocity employed in toluene methylation reported as WHSV (toluene) =1.2h-1, and the space velocity employed in toluene isopropylation reported as WHSV (toluene) =0.8 h-1. The methylation reactions were carried out in the temperature range of 623–773 K, and the isopropylation reactions were carried out in the temperature range of 483–583 K. Atmospheric pressures was maintained in all runs. CATALYSTs containing 0–4.9 wt.% P were prepared using modified and unmodified ZSM-5 zeolites, and their catalytic performance for vapor-phase alkylation of toluene with methanol and 2-PROPANOL were investigated. The optimum phosphorous content for methylation was 2.1 wt.% P which was greater than the optimum phosphorous loading for isopropylation (0.7 wt.% P).

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APA: Copy

SHEIKHOSLAMY, F., YARI, M., & AHZAN, K.. (2011). ZEOLITE CATALYZED ALKYLATION OF TOLUENE BY ALCOHOL. JOURNAL OF PHYSICAL AND THEORETICAL CHEMISTRY, 7(4), 221-233. SID. https://sid.ir/paper/207673/en

Vancouver: Copy

SHEIKHOSLAMY F., YARI M., AHZAN K.. ZEOLITE CATALYZED ALKYLATION OF TOLUENE BY ALCOHOL. JOURNAL OF PHYSICAL AND THEORETICAL CHEMISTRY[Internet]. 2011;7(4):221-233. Available from: https://sid.ir/paper/207673/en

IEEE: Copy

F. SHEIKHOSLAMY, M. YARI, and K. AHZAN, “ZEOLITE CATALYZED ALKYLATION OF TOLUENE BY ALCOHOL,” JOURNAL OF PHYSICAL AND THEORETICAL CHEMISTRY, vol. 7, no. 4, pp. 221–233, 2011, [Online]. Available: https://sid.ir/paper/207673/en

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