Support Effects on Thiophene Hydrodesulfurization over Co-Mo-Ni/Al2O3 and Co-Mo-Ni/TiO2-Al2O3 Catalysts

A carbon-based sulfonated catalyst was prepared by direct sulfonation and carbonization （in moderate conditions：200 ＆#176;C, 12 h） of red liquor solids, a by-product of paper-making process. The prepared sulfonated cata-lyst （SC） had aromatic structure, composed of carbon enriched inner core, and ox...

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Published inChinese journal of chemical engineering Vol. 22; no. 4; pp. 383 - 391
Main Author 刘超 周志明 黄永利 程振民 袁渭康
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.04.2014
Subjects
Al2O3
COOH
hierarchically macro-/mesoporous structure
hydrodesulfurization
HZSM-5
support
TiO2-Al2O3
再生方法
加氢脱硫
噻吩
固体酸催化剂
载体效应
阳离子交换树脂
TiO2-Al2O3
hydrodesulfurization
support
Al2O3
hierarchically macro-/mesoporous structure
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Summary:A carbon-based sulfonated catalyst was prepared by direct sulfonation and carbonization （in moderate conditions：200 ＆#176;C, 12 h） of red liquor solids, a by-product of paper-making process. The prepared sulfonated cata-lyst （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 zir-conia） 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.
Bibliography:LIU Chao, ZHOU Zhiming , HUANG Yongli , CHENG Zhenmin, YUAN Weikang （ State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China）
A carbon-based sulfonated catalyst was prepared by direct sulfonation and carbonization （in moderate conditions：200 ＆#176;C, 12 h） of red liquor solids, a by-product of paper-making process. The prepared sulfonated cata-lyst （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 zir-conia） 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.
hydrodesulfurization, support, hierarchically macro-/mesoporous structure, Al2O3, TiO2-Al2O3
11-3270/TQ
ISSN:1004-9541
2210-321X
DOI:10.1016/S1004-9541(14)60038-0