碳改性对SAPO-5结构和吸附CH_4性能的影响  

Carbon-Modified Effects of SAPO-5 on Structure and CH_4 Adsorption Property

作　　者：王利军[1] 尚红卫[2] 解丽丽[1] 

机构地区：[1]上海第二工业大学城市建设与环境工程学院,上海201209 [2]焦作师范高等专科学校,河南焦作454002

出　　处：《上海第二工业大学学报》2009年第3期194-199,共6页Journal of Shanghai Polytechnic University

基　　金：上海市教委重点项目(No.06ZZ95);上海市教育发展基金会晨光计划项目(No.2007CG72)

摘　　要：以三乙胺为结构导向剂,在高温水热条件下合成了SAPO-5分子筛材料,并将之分别置于空气和氮气氛下823 K焙烧。用XRD、RAMAN、TG及水和甲烷吸附实验考察了氮气氛下分子筛表面碳改性前后对材料结构稳定性及吸水和甲烷性能的影响。结果表明:碳改性后SAPO-5在孔道内生成了纳米碳材料,晶体衍射强度减弱,结构稳定性提高。与SAPO-5样品相比,碳改性后SAPO-5吸水量略微降低;CH4常压吸附量从0.138%提高到0.253%。In this paper, SAPO-5 was hydrothemal method synthesized with triethylamine as the structure-director, and the synthesized samples were calcined under air and nitrogen at 823 K respectively. The surface effect of carbon modified SAPO-5 under a nitrogen atmosphere and its structural stability and adsorption ability to water and methane were studied with methods of XRD, RAMAN, TG, adsorb testing of water and methane. The results showed that the nano carbon materials were formed in SAPO-5 channels, and XRD strength decreases, while structural stability increased. Water-adsorption weigh decreased slightly, while CH4 adsorption weight increased from 0.138% to 0.253% on the samples of carbon-modified SAPO-5 comparing with SAPO-5.

关 键 词：三乙胺 碳改性 SAPO-5 吸附 CH4 

分 类 号：O647.3[理学—物理化学]