化工新型材料

化工新型材料 ›› 2019, Vol. 47 ›› Issue (4) : 267-274.

开发与应用

稻壳焦SiO₂的提取、表征及负载镍铁在稻壳热解中的应用研究

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Study on extraction of SiO₂ from rice husk char and catalysis of supported nickel and iron in rice husk pyrolysis

Shi Xunwang, Xin Xin, Lu Yao, Liu Zhao, Li Hongxia, Cheng Qunpeng, Li Jianfen

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摘要

以稻壳热解的副产物稻壳焦为原料,通过预处理、酸洗、焙烧、后处理等工艺流程,制备了结构细、纯度高的白色二氧化硅(SiO₂)固体粉末(RHCS),并对RHCS进行了表征与分析,采用均匀沉淀法以RHCS为载体制得镍铁催化剂(NiO-Fe₂O₃/RHCS),并采用热解炉考察该催化剂在稻壳中的催化热解活性。结果表明:SiO₂主要为无定形结构,纯度达96.5%;850℃高温煅烧后SiO₂结晶度约62%,颗粒结构疏松均匀,粒径1～10μm,比表面积149cm²/g,平均孔径95nm;NiO-Fe₂O₃/RHCS在稻壳热解中具有较高的催化活性,可有效提高产品燃气品质,气体产量为0.36m³/kg、H₂含量9.18g/kg、可燃气体热值达到12.72kJ/m³,具有较好的应用前景。

Abstract

High purity white SiO₂ solid powder with ultra-fine structure (rice husk char silica,RHCS) was extracted from rice husk char through pretreatment,pickling,roasting,post-processing and other processes.Meanwhile,supported nickel catalyst NiO-Fe₂O₃/RHCS was prepared by homogeneous precipitation and its application on gasification of rice husk was also investigated.The results showed that the extracted SiO₂ was characteristic of amorphous structure with a purity of 96.5%.The crystallinity of SiO₂ was about 62% and the grain size of about 119nm after calcined by 850℃.The average particle size of SiO₂ was about 1～10μm.The specific surface area was 149 m²/g with a pore size of 95nm.The catalytic activity test showed that NiO-Fe₂O₃/RHCS catalyst had a good catalytic activity applicated in pyrolysis of rice husk.It could obviously improve the gas quality,the gas yield was 0.36m³/kg,H₂ content 9.18g/kg,and the calorific value of gas reached 12.72kJ/m³,which had a good application prospect.

关键词

生物质 / 稻壳焦 / 二氧化硅 / 提取 / 表征 / 催化剂载体

Key words

biomass / rice husk char / silicon / extraction / characterization / catalyst support

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稻壳焦SiO₂的提取、表征及负载镍铁在稻壳热解中的应用研究[J]. 化工新型材料, 2019, 47(4): 267-274 DOI:

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参考文献

原文顺序 | 出版日期 | 本文引用

[1] 蒋金纯.一个崭新的绿色产业即将兴起—用稻壳灰制造二氧化硅及活性炭[J].化工学报,2009,60(4):1072-1072.
[2] 刘建飞,曹妍,杨茂华,等.微波辅助DMSO/AmimCl复合溶剂预处理玉米秸秆的酶解影响[J].化学学报,2012,70(18):1950-1956.
[3] 王玉珏,胡敏,王渝,等.秸秆燃烧排放PM2.5特征及影响因素研究[J].化学学报,2016,74(4):356-362.
[4] Rossi L M,Shi L,Quina F H,et al.Stber synthesis of monodispersed luminescent silica nanoparticles for bioanalytical assays[J].Langmuir,2005,21(10):4277-4280.
[5] Van B A,Van G J,Vrij A.Monodisperse colloidal silica spheres from tetraalkoxysilanes:particle formation and growth mechanism[J].Journal of Colloid and Interface Science,1992,154(2):481-501.
[6] 郑典模,朱升干.稻壳制备超细二氧化硅新工艺[J].南昌大学学报(工科版),2009,31(2):117-120.
[7] 苏学军,宗春燕,韩蔚蓝,等.稻壳基二氧化硅的制备及应用研究进展[J].化学工程师,2016,30(7):57-60.
[8] Witoon T,Chareonpanich M,Limtrakul J.Synthesis of bimodal porous silica from rice husk ash via sol-gel process using chitosan as template[J].Materials Letters,2008,62(10):1476-1479.
[9] Ahmed Y M Z,Ewais E M,Zaki Z I.Production of porous silica by the combustion of rice husk ash for tundish lining[J].Journal of University of Science and Technology Beijing,2008,15(3):310-313.
[10] 李大伟,陈登宇,朱锡锋.稻壳炭基高比表面多孔氧化硅的表征及Cu(Ⅱ)吸附特性[J].化工学报,2011,62(12):3434-3439.
[11] 石红,刘学清,杨志兰,等.稻壳二氧化硅对含膦环氧树脂的协效阻燃作用[J].塑料,2015,44(2):30-32.
[12] 穆浩荣,张玲玲,白淑琴.稻壳制备介孔状二氧化硅的光催化性[J].环境工程学报,2015,9(9):4239-4244.
[13] 薄莹莹,李秋潼,许兴友,等.稻壳二氧化硅负载铁催化剂对苯酚双氧水羟化反应的催化活性[J].常州大学学报(自然科学版),2012,24(3):21-25.
[14] 张蔚萍,张怡人,胡庆华.氨基改性稻壳基介孔SiO₂的制备及其吸附铅离子的研究[J].九江学院学报(自然科学版),2017(2):8-10.
[15] 孔艳,姚常斌,曾鸣,等.稻壳制备活性炭联产二氧化硅工艺[J].过程工程学报,2015,15(4):670-676.
[16] 李浩洋,汪海滨.从稻壳中提取二氧化硅和木糖的工艺研究[J].广东化工,2007,34(11):43-45.
[17] Gabriel M,Philipssen C,Bard E K,et al.Rice husk bubbling fluidized bed combustion for amorphous silica synthesis[J].Journal of Environmental Chemical Engineering,2016,4(2):2278-2290.
[18] Alvarez J,Lopez G,Amutio M,et al.Upgrading the rice husk char obtained by flash pyrolysis for the production of amorphous silica and high quality activated carbon[J].Bioresource Technology,2014,170:132-137.
[19] 李赢,石刚,张梁,等.高效利用稻壳联产木糖、多孔炭和二氧化硅[J].高等学校化学学报,2015,36(8):1461-1466.
[20] 卜龙利,王晓昌,王妙刚,等.微波法制备活性炭负载金属催化剂的表征分析[J].西安建筑科技大学学报(自然科学版),2008,40(4):532-537.
[21] 郭树军,周新木,刘厚凡,等.稻壳制备高纯白炭黑的工艺研究[J].粮油食品科技,2010,18(5):13-16.
[22] 吕岩,陈丰,刘成宝,等.二氧化硅膜的电纺合成工艺研究[J].江苏陶瓷,2017,50(1):23-27.
[23] 徐泽丰,崔荣,金江,等.超高温烟尘过滤陶瓷滤料的制备[J].环境工程学报,2016,10(4):1951-1955.
[24] 莫腾腾,宋宁,谢刚,等.高温下高纯二氧化硅的结晶过程研究[J].轻金属,2015(4):49-55.
[25] 郑婧,林吟沁.化学沉淀法合成超细二氧化硅[J].硅酸盐通报,2016,35(9):2941-2945.
[26] 李慧,孙青,吴翠平,等.用硼泥制备多孔二氧化硅及其性能表征[J].硅酸盐通报,2014,33(8):2124-2127.
[27] Kuo H P,Pan S M,Hsu H T.Comparisons of the hydrogen-rich syngas compositions from wet rice husk slurry steam reforming reactions using different catalysts[J].Biomass & Bioenergy,2011,35(7):3025-3031.
[28] Hou Z Y,Yashima T.Meso-porous Ni/Mg/Al catalysts for methane reforming with CO₂[J].Appl Catal A(Gen),2004,261(2):205-209.