Continuous phenol hydroxylation over ultrafine TS-1 in a side-stream ceramic membrane reactor

被引：17

作者：

Jiang, Xiulong ^{[1
,2
]}

She, Fei ^{[1
,2
]}

Jiang, Hong ^{[1
,2
]}

Chen, Rizhi ^{[1
,2
]}

Xing, Weihong ^{[1
]}

Jin, Wanqin ^{[1
]}

机构：

[1] Nanjing Univ Technol, State Key Lab Mat Oriented Chem Engn, Nanjing 210009, Peoples R China

[2] Nanjing Univ Technol, Jiangsu Key Lab Ind Water Conservat & Emiss Reduc, Nanjing 210009, Peoples R China

来源：

KOREAN JOURNAL OF CHEMICAL ENGINEERING | 2013年 / 30卷 / 04期

关键词：

TS-1; Phenol Hydroxylation; Membrane Reactor; Ceramic Membrane; Stability; WASTE-WATER TREATMENT; REGENERATION; BIOREACTORS; PARAMETERS; FILTRATION; TS-1/DIATOMITE; SEPARATION; OXIDATION; CATALYST; PORE;

D O I：

10.1007/s11814-013-0004-0

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A side-stream ceramic membrane reactor system was developed that can facilitate the in situ separation of ultrafine catalysts from the reaction mixture and make the production process continuous. Continuous hydroxylation of phenol to dihydroxybenzene over ultrafme titanium silicalites-1 (TS-1) was taken as a model reaction to evaluate the feasibility and performance of the membrane reactor system. The effects of membrane pore size and operation conditions (residence time, temperature, catalyst concentration, phenol/H2O2 molar ratio) on the performance of the reactor system were examined via single factor experiments. We demonstrated that the membrane pore size and operation conditions greatly affect the conversion, selectivity and filtration resistance. The phenol conversion and dihydroxybenzene selectivity remain stable at about 11% and 95% in a 20-h continuous run, respectively.

引用

页码：852 / 859

页数：8

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