Improvement of the catalytic activity of MCM-48 synthesized from metakaolinite in the alkylation of phenol with tert-butyl alcohol

被引：9

作者：

Jiang, Tingshun ^{[1
]}

Lu, Linhang ^{[1
]}

Le, Shukun ^{[1
]}

Ma, Yan ^{[1
]}

Dai, Liming ^{[1
]}

Zhao, Haibo ^{[1
]}

Zhao, Qian ^{[1
]}

机构：

[1] Jiangsu Univ, Sch Chem & Chem Engn, Zhenjiang 212013, Peoples R China

来源：

APPLIED CLAY SCIENCE | 2015年 / 109卷

关键词：

Metakaolinite; MCM-48; Alkylation; Phenol conversion; Stability; MESOPOROUS MOLECULAR-SIEVE; HYDROTHERMAL STABILITY; H-ALMCM-41; WELL; AID;

D O I：

10.1016/j.clay.2015.03.005

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

M/MCM-48 (M and MCM-48 represent metakaolinite and Mobile composite of matter) mesoporous molecular sieves with good thermal and hydrothermal stabilities were synthesized by a hydrothermal method using metakaolinite as partial Si and Al sources. The samples were characterized by X-ray diffraction (XRD), NH3 temperature-programmed desorption (NH3-TPD), thermal gravimetric-differential scanning calorimeter (TG-DSC), transmission electron microscopy (TEM), Fourier transform-infrared (FT-IR) and N-3 physical adsorption. The effect of crystallization time and temperature on the synthesis of M/MCM-48 was investigated. The catalytic activity of M/MCM-48 was evaluated by the alkylation of phenol with tert-butyl alcohol (TBA). M/MCM-48 with long-range ordering was synthesized at the crystallization temperature of 120 degrees C for 36 h. The H-M/MCM-48, H-Al/MCM-48 and H-MCM-48 catalysts (H represents the protonated Sample) were prepared via an ion-exchanged method. Under comparable conditions, H-M/MCM-48 exhibited a higher catalytic activity than H-MCM-48. A maximum phenol conversion of 73.4% with a 4-tert-butylphenol selectivity of 70.0% was achieved over the H-M/MCM-48 catalyst at the reaction temperature of 140 degrees C. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：1 / 7

页数：7

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