PREPARATION OF CRESOL FROM TOLUENE OXIDATION CATALYZED BY HTS ZEOLITE WITH ACETIC ACID AS SOLVENT

Abstract

Abstract: Cresol is an important chemical intermediate which is mainly produced through complicated and pollutant traditional methods. While titanium silicalite (TS-1) catalyzed toluene oxidation using hydrogen peroxide as oxidant is a clean route for cresol synthesis. This study investigated the effects of different factors on toluene and hydrogen peroxide reaction，using HTS as catalyst which is recrystalized from TS-1zeolite and acetic acid［36%（w）］as solvent. The results showed that acetic acid［36%（w）］ was effective for promoting the reaction. The oxidation occurred mainly at the outside of the zeolite in early reaction stage，while more reaction was taken place inside the channels of the zeolite as the reaction proceeds. Under optimized conditions，the toluene conversion rate，the selectivity of cresol and the molar ratio of para-cresol/ortho-cresol of cresol product reached to 15.1%，5.0% ，1.28，respectively.

Key words: toluene, cresol, titanium silicalite zeolite sieve, acetic acid

CLC Number:

Peng Xinxin Lin Min Zhu Bin Xia Changjiu Luo Yibin Shu Xingtian. PREPARATION OF CRESOL FROM TOLUENE OXIDATION CATALYZED BY HTS ZEOLITE WITH ACETIC ACID AS SOLVENT[J]. Petroleum Processing and Petrochemicals, 2019, 50(6): 33-39.

References

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