超细SiO_2负载非晶态Ni-B合金植物油加氢催化剂的研究  

STUDY ON AMORPHOUS ALLOY NI-B/SIO_2 CATALYST FOR CATALYTIC HYDROGENATION OF VEGETABLE OILS

作　　者：徐三魁[1,2] 刘仲毅[2] 

机构地区：[1]河南工业大学材料科学与工程学院,河南郑州450007 [2]郑州大学化学系,河南郑州450052

出　　处：《河南工业大学学报（自然科学版）》2009年第3期44-47,共4页Journal of Henan University of Technology：Natural Science Edition

基　　金：河南省教育厅2008年自然科学基金项目(2008A430004);郑州市2006年科技攻关项目(064SGDG25127-6)

摘　　要：以水玻璃为原料,通过离子交换制得载体SiO2,以NiCl2.6H2O为活性组分前体,KBH4为还原剂,采用液相化学还原法制备了Ni-B/SiO2非晶态合金催化剂;用大豆油催化加氢制备硬化油脂来考察催化剂的催化活性.研究了制备过程中镍含量、还原剂KBH4用量及载体制备方法对催化剂加氢活性的影响.结果表明:镍含量在2 0%(W/W),n(KBH4)∶n(Ni2+)=1.5∶1.0;加乙醇置换凝胶中的水分、低温温烘干制载体SiO2的条件下制备的催化剂活性最高.SiO2 was prepared from water glass by ion exchange. The amorphous alloy Ni-B/SiO2 catalyst was prepared by liquid phase chemical reduction method using NiCl2· 6H2O as active precursor and KBH4 as reducer. The catalytic activity of the catalyst was investigated by hydrogenating soybean oil to prepare hardened fat. The effects of Ni content, reducer KBH4 amount and carrier preparation method on catalytic activity were investigated. The results indicate that the catalyst has the highest catalytic activity under the conditions of Ni content 20% （ W/W）, n（ KBH4 ） ： n（ Ni^2 ＋ ） = 1.5： 1.0, and adoption of ethanol addition and low-temperature drying for preparing the SiO2 carrier.

关 键 词：化学还原法 Ni-B/SiO2催化剂 油脂加氢 非晶态合金 

分 类 号：TS221[轻工技术与工程—粮食、油脂及植物蛋白工程]