催化剂对油页岩半焦孔隙结构的影响  

Effect of catalyst on pore structure of oil shale semi-coke

作　　者：朱国青[1] 毕洪伟[1] 牛莲山[1] 褚志强 潘妮[2] Zhu Guoqing;Bi Hongwei;Niu Lianshan;Chu Zhiqiang;Pan Ni(Xining Special Steel Co.,Ltd.;Wuhan University of Science and Technology)

机构地区：[1]西宁特殊钢股份有限公司 [2]武汉科技大学材料与冶金学院

出　　处：《冶金能源》2020年第1期23-27,共5页Energy For Metallurgical Industry

摘　　要：文章通过实验研究了不同种类催化剂(CoCl2·6H2O、Fe2O3、Fe3O4)在热解过程中对油页岩半焦孔隙形成的影响。实验采用比表面与孔隙分析仪ASAP2460,进行等温氮吸附及脱附实验,采用BET方程进行线性回归分析,采用BJH方法进行孔隙容积分析。与未添加催化剂的试样进行对比分析,结果表明加入不同催化剂的油页岩半焦样品的吸附等温线均属于Ⅱ型等温线;添加了CoCl2·6H2O、Fe3O4的试样,其BET比表面积增大,添加了Fe2O3的试样BET比表面积降低;添加了催化剂的试样,其总孔隙容积都增加;根据孔隙容积分布曲线,添加了CoCl2·6H2O的试样微孔比例降低,添加了Fe盐催化剂的试样微孔比例升高。In the paper,the effects of different kinds of catalysts( CoCl2·6 H2O,Fe2O3,Fe3O4) on the pore formation of oil shale semi-coke during pyrolysis were studied by experiments. The isotherm nitrogen adsorption and desorption experiments were carried out by specific surface area and pore analyzer ASAP2460,the regression line analysis was carried out by BET method,and the pore volume analysis was carried out by BJH method. Compared with the samples without catalyst,the adsorption isotherms of oil shale semicoke samples with different catalysts belong to type II isotherms,the specific surface area of BET increases and the specific surface area of BET decreases with the addition of CoCl2·6H2O,Fe3O4,and the total pore volume of the samples added with catalysts increases,and the specific surface area of BET decreases with the addition of Fe2O3,and the adsorption isotherms of semi-coke samples with different catalysts belong to type II isotherms. According to the pore volume distribution curve,the proportion of micro pores in the samples added with CoCl2·6 H2O decreased,while the proportion of micro pores in the samples with Fe salt catalyst increased.

关 键 词：油页岩半焦 BET比表面积 孔径分布 催化剂 

分 类 号：TE662[石油与天然气工程—油气加工工程] TQ426[化学工程]