Acidic Montmorillonite/Cordierite Monolithic Catalysts for Cleavage of Cumene Hydroperoxide

doi:10.1016/j.cjche.2014.06.006

Chin.J.Chem.Eng. ›› 2014, Vol. 22 ›› Issue (8): 854-860.DOI: 10.1016/j.cjche.2014.06.006

• SELCTED PAPERS FROM THE 4TH INTERNATIONAL CONFERENCE ON STRUCTURED CATALYSTS AND REACTIONS • Previous Articles Next Articles

Acidic Montmorillonite/Cordierite Monolithic Catalysts for Cleavage of Cumene Hydroperoxide

Li Han¹, Yanjun Wang², Jie Zhang¹, Zhigang Lei¹, Chongpin Huang¹, Biaohua Chen¹

1. State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China;
2. No. 3 ChemicalWork of Beijing Yanshan Petrochemical Co., SINOPEC, Beijing 102500, China

Received:2013-12-24 Revised:2014-02-12 Online:2014-11-04 Published:2014-08-28
Supported by:
Supported by the National Natural Science Foundation of China (21121064, 21076008, 21206008), the Projects in the National Science & Technology Pillar Program during the 12th Five-Year Plan Period (2011BAC06B04), and the Research Fund for the Doctoral Program of Higher Education of China (20120010110002).

Acidic Montmorillonite/Cordierite Monolithic Catalysts for Cleavage of Cumene Hydroperoxide

Li Han¹, Yanjun Wang², Jie Zhang¹, Zhigang Lei¹, Chongpin Huang¹, Biaohua Chen¹

1. State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China;
2. No. 3 ChemicalWork of Beijing Yanshan Petrochemical Co., SINOPEC, Beijing 102500, China

通讯作者: Jie Zhang
基金资助:
Supported by the National Natural Science Foundation of China (21121064, 21076008, 21206008), the Projects in the National Science & Technology Pillar Program during the 12th Five-Year Plan Period (2011BAC06B04), and the Research Fund for the Doctoral Program of Higher Education of China (20120010110002).

Abstract

Abstract: In thiswork, a series of acidicmontmorillonite/cordieritemonolithic catalystswere prepared by a coatingmethod using silica sol as the binder. The morphology and structure of the acidic montmorillonite/cordierite samples were characterized by means of X-ray diffraction (XRD), N₂ adsorption/desorption isotherms, and scanning electron microscope (SEM). The cleavage of cumene hydroperoxide (CHP) in a conventional fixed-bed reactor was chosen as a model reaction to evaluate the catalytic activity of the monolithic catalysts. The influences of acidic montmorillonite loading, reaction temperature, CHP concentration, and weight hourly space velocity (WHSV) on the catalytic activity and selectivity of phenol were studied. The results indicated that the obtained acidic montmorillonite/cordierite monolithic catalysts were firm and compact, and the loading of acidic montmorillonite was found to reach 40% (by mass) after three coating operations. The surface area of acidic montmorillonite/cordierite catalysts increases greatly as acidicmontmorillonite loading increases due to higher surface area of acidic montmorillonite. Under the optimal reaction conditions (acidic montmorillonite loading of 32.5% (by mass), temperature of 80℃, a mass ratio of CHP to acetone of 1:3, and WHSV of CHP of 90 h^-1), the conversion of CHP can reach 100%, and the selectivity of phenol is up to 99.8%.

Key words: Monolithic catalyst, Acidic montmorillonite, Cumene hydroperoxide, Cleavage

摘要： In thiswork, a series of acidicmontmorillonite/cordieritemonolithic catalystswere prepared by a coatingmethod using silica sol as the binder. The morphology and structure of the acidic montmorillonite/cordierite samples were characterized by means of X-ray diffraction (XRD), N₂ adsorption/desorption isotherms, and scanning electron microscope (SEM). The cleavage of cumene hydroperoxide (CHP) in a conventional fixed-bed reactor was chosen as a model reaction to evaluate the catalytic activity of the monolithic catalysts. The influences of acidic montmorillonite loading, reaction temperature, CHP concentration, and weight hourly space velocity (WHSV) on the catalytic activity and selectivity of phenol were studied. The results indicated that the obtained acidic montmorillonite/cordierite monolithic catalysts were firm and compact, and the loading of acidic montmorillonite was found to reach 40% (by mass) after three coating operations. The surface area of acidic montmorillonite/cordierite catalysts increases greatly as acidicmontmorillonite loading increases due to higher surface area of acidic montmorillonite. Under the optimal reaction conditions (acidic montmorillonite loading of 32.5% (by mass), temperature of 80℃, a mass ratio of CHP to acetone of 1:3, and WHSV of CHP of 90 h^-1), the conversion of CHP can reach 100%, and the selectivity of phenol is up to 99.8%.

关键词: Monolithic catalyst, Acidic montmorillonite, Cumene hydroperoxide, Cleavage

Li Han, Yanjun Wang, Jie Zhang, Zhigang Lei, Chongpin Huang, Biaohua Chen. Acidic Montmorillonite/Cordierite Monolithic Catalysts for Cleavage of Cumene Hydroperoxide[J]. Chin.J.Chem.Eng., 2014, 22(8): 854-860.

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Acidic Montmorillonite/Cordierite Monolithic Catalysts for Cleavage of Cumene Hydroperoxide

Acidic Montmorillonite/Cordierite Monolithic Catalysts for Cleavage of Cumene Hydroperoxide

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