Modification of pillared MFI zeolite nanosheets by nitridation with tailored activity in benzylation of mesitylene and benzyl alcohol

Zhipeng Chen; Jiajin Huang; Qiaowen Mu; Huiyong Chen; Feng Xu; Yanxiong Fang; Baoyu Liu

doi:10.1016/j.cjche.2019.03.027

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Modification of pillared MFI zeolite nanosheets by nitridation with tailored activity in benzylation of mesitylene and benzyl alcohol

Materials and Product Engineering | Updated：2026-01-06

- Modification of pillared MFI zeolite nanosheets by nitridation with tailored activity in benzylation of mesitylene and benzyl alcohol
- Chinese Journal of Chemical Engineering Vol. 27, Issue 8, Pages: 1981-1987(2019)
- Affiliations：
  
  1. School of Chemical Engineering and Light Industry, Guangdong University of Technology,Guangzhou,China,510006
  2. School of Chemical Engineering, Northwest University,Xi'an,China,710069
  3. School of Environment and Chemical Engineering, Foshan University,Foshan,China,528000
- Author bio：
- Funds：
- DOI：10.1016/j.cjche.2019.03.027
  CLC：
- Published：2019
- Accepted：
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Zhipeng Chen, Jiajin Huang, Qiaowen Mu, Huiyong Chen, Feng Xu, Yanxiong Fang, Baoyu Liu. Modification of pillared MFI zeolite nanosheets by nitridation with tailored activity in benzylation of mesitylene and benzyl alcohol[J]. Chinese Journal of Chemical Engineering, 2019, 27(8): 1981-1987.
DOI：

Zhipeng Chen, Jiajin Huang, Qiaowen Mu, Huiyong Chen, Feng Xu, Yanxiong Fang, Baoyu Liu. Modification of pillared MFI zeolite nanosheets by nitridation with tailored activity in benzylation of mesitylene and benzyl alcohol[J]. Chinese Journal of Chemical Engineering, 2019, 27(8): 1981-1987. DOI： 10.1016/j.cjche.2019.03.027.

摘要

Abstract

The modification of pillared MFI zeolites was performed by nitridation of silica pillared MFI zeolite nanosheets under NH

atmosphere with different time. The resultant zeolites were characterized by a complementary combination of X-ray power diffraction (XRD)

scanning electron microscopy (SEM)

transmission electron microscopy (TEM)

pyridine-IR spectroscopy and N

adsorption-desorption isotherms. The analyses showed that the nitridation didn't destroy the crystallinity and specific surface area of zeolites

and the acidity of zeolites can be tailored by tuning the time of nitridation

resulting in the different concentration ratios of Brønsted-to-Lewis (B/L) acid sites. Moreover

the nitrided zeolites exhibited high selectivity to 2-benzyl-1

5-trimethylbenzene than parent silica pillared MFI zeolite nanosheets in benzylation of mesitylene with benzyl alcohol. A balance between Brønsted acid sites and Lewis acid sites can inhibit the self-etherification of benzyl alcohol and enhance the selectivity of alkylated product. These experimental data implied that nitridation was an effective method to modulate the acidity of zeolites and t

he synergy between Brønsted acid sites and Lewis acid sites was a decisive factor to determine the selectivity.

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