The Fouling Mechanism of Ceramic Membranes Used for Recovering TS-1 Catalysts

仲兆祥; 李冬燕; 刘馨; 邢卫红; 徐南平

doi:10.1016/S1004-9541(09)60032-X

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The Fouling Mechanism of Ceramic Membranes Used for Recovering TS-1 Catalysts

Updated：2026-01-06

- The Fouling Mechanism of Ceramic Membranes Used for Recovering TS-1 Catalysts
- The Fouling Mechanism of Ceramic Membranes Used for Recovering TS-1 Catalysts
- 中国化学工程学报（英文版） 2009年17卷第1期页码：53-57
- Affiliations：
  
  1. State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemistry and Chemical Engineering, Nanjing University of Technology,Nanjing,China,210009
  2. Chemical Engineering Department, Nanjing College of Chemical Technology,Nanjing,China,210048
- Author bio：
- Funds：
  
  Supported by the National Basic Research Program of China(2009CB623406);the National Natural Science Foundation of China(20806038);the Natural Science Foundation of Jiangsu Province (BK2008504);the National Science Foundation for Postdoctoral Scientists of China (20070421005);Jiangsu Planned Projects for Postdoctoral Research Funds (0702020B)
- DOI：10.1016/S1004-9541(09)60032-X
  中图分类号：
- 纸质出版：2009
- Accepted：
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仲兆祥, 李冬燕, 刘馨, 等. The Fouling Mechanism of Ceramic Membranes Used for Recovering TS-1 Catalysts[J]. 中国化学工程学报（英文版）, 2009,17(1):53-57.

ZHONG Zhaoxiang, LI Dongyan, LIU Xin, XING Weihong, XU Nanping. The Fouling Mechanism of Ceramic Membranes Used for Recovering TS-1 Catalysts[J]. , 2009, 17(1): 53-57.
仲兆祥, 李冬燕, 刘馨, 等. The Fouling Mechanism of Ceramic Membranes Used for Recovering TS-1 Catalysts[J]. 中国化学工程学报（英文版）, 2009,17(1):53-57. DOI： 10.1016/S1004-9541(09)60032-X.

ZHONG Zhaoxiang, LI Dongyan, LIU Xin, XING Weihong, XU Nanping. The Fouling Mechanism of Ceramic Membranes Used for Recovering TS-1 Catalysts[J]. , 2009, 17(1): 53-57. DOI： 10.1016/S1004-9541(09)60032-X.

摘要

Ceramic ultrafiltration membranes were used to separate titanium silicalite-1(TS-1) catalysts from the slurry of catalytic ammoximation of cyclohexanone to oxime.Silica was shown to have a great effect on membrane fouling in the alkaline environment of this system.In the ammoximation system

there are three main silica sources

which are residual silica on the catalyst particles surface during preparation

silica dissolved from TS-1 catalyst particles by ammonia solvent

and silica sol added into the reaction slurry to inhibit the dissolution erosion of the TS-1 catalyst.The silica dissolved by ammonia has been proved to influence membrane fouling most among the three silica sources.This was because the amount of silica dissolved by ammonia was the largest

and the polymerization of silica monomers at high concentration caused colloid particles formation

which led to a dense cake layer depositing on the membrane surface.Meanwhile

the size reduction of catalyst particles caused by alkaline dissolution also increased specific resistances of cake layers.

Abstract

there are three main silica sources

which are residual silica on the catalyst particles surface during preparation

silica dissolved from TS-1 catalyst particles by ammonia solvent

and the polymerization of silica monomers at high concentration caused colloid particles formation

which led to a dense cake layer depositing on the membrane surface.Meanwhile

the size reduction of catalyst particles caused by alkaline dissolution also increased specific resistances of cake layers.

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