Preparation and characterization of a magnetic solid acid for esterification of ammonium lactate with n-butanol
文献类型： 外文期刊
作者： Wang, Qunhui 1 ; Zhao, Wenchao 1 ; Sun, Xiaohong 4 ; Zhao, Wenjun 3 ;
作者机构： 1.Harbin Inst Technol, Dept Environm Sci & Technol, Harbin 150090, Peoples R China
2.Univ Sci & Technol Beijing, Dept Environm Engn, Beijing 100083, Peoples R China
3.Chinese Acad Sci, Tech Inst Phys & Chem, Nano Organ Photoelect Lab, Beijing 100080, Peoples R China
4.Beijing Agro Biotechnol Res Ctr, Beijing 100097, Peoples R China
关键词： esterification; ammonium lactate; catalysis; magnetic solid acid
期刊名称：CATALYSIS LETTERS （ 影响因子：3.186； 五年影响因子：3.092 ）
ISSN： 1011-372X
年卷期： 2008 年 121 卷 3-4 期
页码：
收录情况： SCI
摘要： One kind of magnetic solid acid (MSA) was prepared by thermolysis of nickel sulfate with ferric hydroxide at 1,123 K. Its properties, such as magnetism and surface acidity, were investigated by PPMS, FTIR-NH3, TPD-NH3, XRF, XRD techniques. Its saturation magnetization is estimated to be 10.72 emu/g and a hysteretic feature with a remnant magnetization (2.76 emu/g) and coercivity (0.15 kOe) at 300 K is exhibited. The results also reveal that MSA solely possesses mild Lewis acid sites and four crystalline phases. Its catalytic activity for esterification of ammonium lactate with n-butanol was tested. The esterification yield (Ey) will be significantly enhanced when SnCl2 center dot 2H(2)O is added. The highest Ey will be up to 87.3% when the complex concentration is 5 wt% (mass ratio of SnCl2 center dot 2H(2)O to MSA = 4:1). The possible reasons correlating with the esterification performance of the complex system are discussed.
- 相关文献
作者其他论文 更多>>
-
Metabolic mechanism of thermal pretreatment combined with ethanol pre-fermentation to enhance anaerobic digestion of food waste: A comprehensive analysis of key enzyme-encoding genes
作者：Zhang, Shuang;Zhao, Pan;Gao, Ming;Wu, Chuanfu;Wang, Qunhui;Gao, Ming;Wu, Chuanfu;Wang, Qunhui;Sun, Xiaohong;Wang, Qunhui
关键词：Anaerobic fermentation; Pretreatment; Microbial community; Metabolic pathways; Enzyme-encoding genes
-
Research progress for co-production ethanol and biobased products
作者：Li, Yongsheng;Sun, Haishu;Zhang, Yuanchun;Wang, Xiaona;Gao, Ming;Wang, Qunhui;Sun, Xiaohong;Gao, Ming;Wang, Qunhui
关键词：Ethanol; Co-production; Biobased chemicals; Bioenergy; Microbial fermentation
-
Optimizing ethanol pre-fermentation of food waste to enhance batch anaerobic digestion: Regulation of the acidification pathway
作者：Zhang, Shuang;Zhao, Pan;Wu, Chuanfu;Gao, Ming;Wang, Qunhui;Wu, Chuanfu;Gao, Ming;Wang, Qunhui;Sun, Xiaohong;Wang, Qunhui
关键词：Anaerobic fermentation; Microbial community; Acidogenesis; Acetogenesis; Methanogenesis
-
Impact of biochar on ammonia emission mitigation and enhanced humification in the bio-drying process of food waste digestate
作者：Xu, Mingyue;Wang, Xiaona;Chen, Enmiao;Sun, Haishu;Li, Yongsheng;Wang, Qunhui;Wang, Qunhui;Sun, Xiaohong;Xu, Mingyue
关键词：Food waste digestate; Bio-drying; Biochar; Bacterial community
-
Synthesis of Poly(Lactic Acid) from Ammonium Lactate Fermentation Broth of Food Waste
作者：Zhang, Bingxin;Guo, Yan;Gao, Ming;Wu, Chuanfu;Wang, Xiaona;Wang, Qunhui;Sun, Xiaohong
关键词：Food waste; Ammonium lactate fermentation broth; Stannous chloride modified resin; Butyl lactate; Lactide; Poly(lactic acid)
-
Ethanol-type anaerobic digestion enhanced methanogenic performance by stimulating direct interspecies electron transfer and interspecies hydrogen transfer
作者：Zhang, Shuang;Ren, Yuanyuan;Zhao, Pan;Wang, Xiaona;Wang, Qunhui;Ren, Yuanyuan;Wang, Xiaona;Wang, Qunhui;Sun, Xiaohong
关键词：Methane production; E-pili; Ethanol-type fermentation; Syntrophic metabolism; Hydrogenase genes
-
Hemicellulose recovery and lignin removal through acid-alkali union pretreatment to improve the lactic acid production from garden garbage
作者：Zhu, Wenbin;Zhang, Yuanchun;Ma, Xiaoyu;Li, Yuan;Liu, Shuo;Gao, Ming;Wang, Qunhui;Gao, Ming;Wang, Qunhui;Sun, Xiaohong
关键词：Garden garbage; Acid-alkali union pretreatment; Hemicellulose recovery; Lactic acid; Byproduct yield
