SCI和EI收录∣中国化工学会会刊

Chin.J.Chem.Eng. ›› 2014, Vol. 22 ›› Issue (4): 392-397.DOI: 10.1016/S1004-9541(14)60058-6

• CATALYSIS, KINETICS AND REACTION ENGINEERING • Previous Articles     Next Articles

One Step Preparation of Sulfonated Solid Catalyst and Its Effect in Esterification Reaction

KANG Shimin, CHANG Jie, FAN Juan   

  1. The Key Laboratory of Fuel Cell Technology of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
  • Received:2012-11-27 Revised:2013-04-17 Online:2014-04-04 Published:2014-04-28
  • Supported by:

    Supported by the State Key Development Program for Basic Research of China (2013CB228104, 2010CB732205), Ph. D Programs Foundation of Ministry of Education of China (20120172110011), and the National High Technology Research and Development Program of China (2012AA051801).

One Step Preparation of Sulfonated Solid Catalyst and Its Effect in Esterification Reaction

康世民, 常杰, 范娟   

  1. The Key Laboratory of Fuel Cell Technology of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
  • 通讯作者: CHANG Jie
  • 基金资助:

    Supported by the State Key Development Program for Basic Research of China (2013CB228104, 2010CB732205), Ph. D Programs Foundation of Ministry of Education of China (20120172110011), and the National High Technology Research and Development Program of China (2012AA051801).

Abstract: A carbon-based sulfonated catalyst was prepared by direct sulfonation and carbonization (in moderate conditions: 200 ℃, 12 h) of red liquor solids, a by-product of paper-making process. The prepared sulfonated catalyst (SC) had aromatic structure, composed of carbon enriched inner core, and oxygen-containing (SO3H, COOH, OH) groups enriched surface. The SO3H, COOH, OH groups amounted to 0.74 mmol·g-1, 0.78 mmol·g-1, 2.18 mmol·g-1, respectively. The fresh SC showed much higher catalytic activity than that of the traditional solid acid catalysts (strong-acid 732 cation exchange resin, hydrogen type zeolite socony mobile-five (HZSM-5), sulfated zirconia) in esterification of oleic acid. SC was deactivated during the reactions, through the mechanisms of leaching of sulfonated species and formation of sulfonate esters. Two regeneration methods were developed, and the catalytic activity can be mostly regenerated by regeneration Method 1 and be fully regenerated by regeneration Method 2, respectively.

Key words: red liquor solids, sulfonated solid catalyst, carbonization, esterification

摘要: A carbon-based sulfonated catalyst was prepared by direct sulfonation and carbonization (in moderate conditions: 200 ℃, 12 h) of red liquor solids, a by-product of paper-making process. The prepared sulfonated catalyst (SC) had aromatic structure, composed of carbon enriched inner core, and oxygen-containing (SO3H, COOH, OH) groups enriched surface. The SO3H, COOH, OH groups amounted to 0.74 mmol·g-1, 0.78 mmol·g-1, 2.18 mmol·g-1, respectively. The fresh SC showed much higher catalytic activity than that of the traditional solid acid catalysts (strong-acid 732 cation exchange resin, hydrogen type zeolite socony mobile-five (HZSM-5), sulfated zirconia) in esterification of oleic acid. SC was deactivated during the reactions, through the mechanisms of leaching of sulfonated species and formation of sulfonate esters. Two regeneration methods were developed, and the catalytic activity can be mostly regenerated by regeneration Method 1 and be fully regenerated by regeneration Method 2, respectively.

关键词: red liquor solids, sulfonated solid catalyst, carbonization, esterification