木质素三甲基季铵盐为模板剂制备多孔氧化硅材料  

Preparation of porous silicon oxide materials by lignin trimethyl quaternary ammonium salt as templates

作　　者：王春海[1] 李志娜[1] 赵银凤[1] 卑莹[1] 任世学[1] 方桂珍[1] 

机构地区：[1]东北林业大学生物质材料科学与技术教育部最点实验室,黑龙江省150040

出　　处：《北京林业大学学报》2011年第4期118-123,共6页Journal of Beijing Forestry University

基　　金：林业公益性行业科研专项(200904072);国家自然科学基金项目(30471363)

摘　　要：为了探索以木质素为模板剂制备无机多孔材料的方法,提高木质素产品附加值,以木质素三甲基季铵盐为模板剂、正硅酸乙酯为硅源,采用溶胶凝胶法和焙烧脱模法制备多孔氧化硅材料。结果表明:木质素三甲基季铵盐存在于煅烧前的复合物中,煅烧后得到的多孔氧化硅材料中木质素三甲基季铵盐吸收峰消失,但具有SiO2特征吸收峰;多孔氧化硅材料孔隙发达,孔径随模板剂用量的增加而增大;SiO2颗粒以无定形状态存在;多孔氧化硅材料比表面积随模板剂用量增加而变小,最大可达354.5m2/g,孔径主要分布在2.7～5.6nm,平均孔径为21.4nm;多孔氧化硅材料的热稳定性良好,600～800℃时骨架不发生分解。In order to explore the preparation of inorganic porous materials by lignin as templates and improve the added value of lignin products, porous silicon oxide materials were prepared by sol-gel and roasting demould methods based on ethyl orthosilicate as a silicon source and lignin trimethyl quaternary ammonium salt as a template. Results showed that the lignin trimethyl quaternary ammonium salt existed in the compounds before calcination and porous materials after calcination had the characterislic absorption peak of SiO2, while the absorption peak of lignin trimethyl quaternary amnmnium salt disappeared. The porous materials were characteristic of developed void space structnre and aperture increased with the increment of the template amount. SiO2 PPP particles showed amorphous slate. Specific surface area of porous materials decreased with the increment of template amount and the maximum was 354.5 m^2/g. The aperture ranged from 2.7 to 5.6 nm and average aperture was 21.4 nnl. The porous silicon oxide materials had good thermal stability and skeleton （lid not decompose even at 600 800℃.

关 键 词：木质素 木质素三甲基季铵盐 模板剂 溶胶凝胶法 多孔氧化硅材料 

分 类 号：TQ430.6[化学工程]