稻草基碳硅材料固载硅钨酸催化制备月桂酸单甘酯工艺的研究  

Preparation of Glycerol Monolaurate Catalyzed by Silicotungstic AcidSupported on Carbon Silicon Materials from Rice Straw

作　　者：蒋佳睿 王佳佳 王真 朱冰心 王涵 赵孙超 韩晓祥[1] 唐秀娟[2] Jiang Jiarui;Wang Jiajia;Wang Zhen;Zhu Bingxin;Wang Han;Zhao Sunchao;Han Xiaoxiang;Tang Xiujuan(School of Food Science and Biotechnology,Zhejiang Gongshang University,Hangzhou 310018;School of Environmental Science and Engineering,Zhejiang Gongshang University,Hangzhou 310018)

机构地区：[1]浙江工商大学食品与生物工程学院,杭州310018 [2]浙江工商大学环境科学与工程学院,杭州310018

出　　处：《中国粮油学报》2025年第1期104-111,共8页Journal of the Chinese Cereals and Oils Association

摘　　要：以可再生资源稻草为原料,经碳化、氨基功能化后通过化学键与硅钨酸结合制备稻草基碳硅材料固载硅钨酸催化剂,并借助XRD、FE-SEM、BET、FT-IR、XPS和正丁胺电位滴定等技术手段对催化剂各项性能进行表征。利用月桂酸(LA)与甘油(GL)选择性酯化反应为模型考察稻草基碳硅材料固载硅钨酸催化剂的催化性能。研究表明,973 K煅烧的载体固载硅钨酸催化剂(C—Si—NH_(2)—STA)表现出最佳催化性能,载体大比表面积和丰富的孔隙结构及适宜的BrΦnsted酸性是其具有高活性的原因。在GL/LA物质的量比5∶1,催化剂质量分数5%,反应时间2 h,反应温度423 K条件下,C—Si—NH_(2)—STA催化制备月桂酸单甘脂(GML)平均产率为80.7%。Renewable resource rice straw was used as the raw material,after carbonization and amino functionalization,a rice straw-based carbon silicon material supported silicotungstic acid catalyst was prepared by chemical bonding.The catalyst was subjected to characterization through various tests,including XRD,FE-SEM,BET,FT-IR,XPS,and n-butylamine potentiometric titration.To assess the performance,the catalyst was employed in a selective esterification reaction between lauric acid(LA)and glycerol(GL)as a model reaction.The results revealed that the catalyst supported with a carrier calcined at 973 K(C-Si-NH_(2)-STA)exhibited the best catalytic performance.Its high activity can be ascribed to the large specific surface area,abundant pore structure of the carrier,and its suitable Br nsted acidity.Under the conditions of GL/LA molar ratio of 5∶1,catalyst amount of 5%,reaction time of 2 h,and reaction temperature of 423 K,the average yield of glycerol monolaurate(GML)reached 80.7%when C-Si-NH_(2)-STA was used as the catalyst.

关 键 词：稻草 硅钨酸 月桂酸单甘酯 

分 类 号：O643.32[理学—物理化学]