摘要
将煤矸石酸浸渣在750℃下煅烧除炭,与Na_2CO_3按质量比1∶1.2混合,在800℃煅烧1.5 h,制备Na P分子筛,优化工艺条件为:n(SiO_2)/n(Al_2O_3)为4.5,n(Na_2O)/n(SiO_2)为1.5, n(H_2O)/n(Na_2O)为35,94℃晶化9 h。结果表明,煤矸石酸浸渣经碱熔可完全活化,采用水热晶化的方法,可制备结晶良好的NaP分子筛。
The acid leaching residue of coal gangue was calcined at 750℃for carbon removal,then it was mixed with sodium carbonate at a mass ratio of 1∶1.2 and calcined at 800℃for 1.5 h,the optimum conditions for the preparation of NaP molecular sieve were that:n(SiO2)/n(Al2O3)was 4.5,n(Na2O)/n(SiO2)was 1.5,n(H2O)/n(Na2O)was 35 and crystallized at 94℃for 9 h.The results show that the acid leaching residue of coal gangue can be activated completely by alkali melting,and the NaP molecular sieve with good crystallization can be obtained by hydrothermal crystallization.
作者
孔德顺
蒋荣立
Kong Deshun;Jiang Rongli(School of Chemical Engineering,China University of Mining and Technology,Xuzhou,Jiangsu 221016;School of Chemistry and Materials Engineering,Liupanshui Normal University,Liupanshui,Guizhou 553004;Guizhou Provincial Key Laboratory of Coal Clean Utilization,Liupanshui,Guizhou 553004)
出处
《非金属矿》
CAS
CSCD
北大核心
2021年第1期13-15,共3页
Non-Metallic Mines
基金
贵州省科技厅科学技术基金资助项目(黔科合基础[2018]1142)
贵州省教育厅创新群体重大研究项目(黔教合KY字[2017]054)
贵州省煤炭洁净利用重点实验室项目(黔科合平台人才[2020]2001)
六盘水市科技计划项目(52020-2019-05-17)。
关键词
煤矸石
酸浸渣
碱熔
NaP分子筛
coal gangue
acid leaching residue
alkali melting
NaP molecular sieve
