硅铝层柱累托土的表征  

Characterization of Si-Al-rectorite

作　　者：王廷海[1] 何颖[1] 王学丽[1] 韩燕[1] 

机构地区：[1]中国石油天然气股份有限公司兰州化工研究中心,甘肃兰州730060

出　　处：《工业催化》2014年第1期48-51,共4页Industrial Catalysis

摘　　要：以钠基累托土为原料,制备了硅铝层柱累托土,并采用XRD、NH_3-TPD、吡啶红外和BET进行了表征。结果表明,合成的材料主要以中强酸为主,有较强的L酸,没有B酸,Al与累托土最佳比例为6mmol·g^-1。硅铝层柱累托土中除含有低于2 nm的微孔外,还含有大量(2~4)nm中孔,最可几孔径为(3.3~4.3)nm;硅铝层柱累托土微孔最可几孔径为0.5 nm,比较集中,硅、铝在片层间均匀分布。Si-Al-Rectorite was synthesized using sodium rectorite as the raw material and characterized by XRD, NH3-TPD, pyridine adsorbed IR and BET. The results indicated that Si-Al-rectorite with the optimal ratio of Al to rectorite 6 mmol · g-1 mainly had mid-strong acid and strong Lewis acid without Brcnsted acid. Si-Al-Rectorite possessed not only lots of mesopores with （2 -4） nm pore diameter, but also micro- pores with pore diameter less than 2 nm. The most probable aperture distribution of mesoporous materials and microporous materials were （ 3.3 - 4.3 ） nm and 0.5 nm, respectively. The distribution of silicon and aluminium in Si-Al-rectorites layers was uniform.

关 键 词：催化化学 累托土 铝层柱累托土 硅铝层柱累托土 

分 类 号：O643.36[理学—物理化学] TQ426.6[理学—化学]