酸改性高岭土的结构与性能的研究  

A Study on Structure and Characteristic of Acid-modified Kaolin

作　　者：欧延[1] 林敬东[1] 陈文瑞 陈鸿博[1] 廖代伟[1] 

机构地区：[1]厦门大学物理化学研究所化学系固体表面物理化学国家重点实验室,福建厦门361005 [2]福建九州龙岩高岭土公司,福建龙岩364000

出　　处：《厦门大学学报（自然科学版）》2004年第2期272-274,共3页Journal of Xiamen University：Natural Science

基　　金：福建省科技攻关计划重大项目(2002H013)资助

摘　　要：通过高温煅烧处理龙岩高岭土,再经盐酸抽提改性可以制备酸活白土.采用XRD、BET、IR等方法研究了酸改性后酸活白土的结构和性能.实验表明,适量浓度的酸处理有利于增加高岭土表面酸的数量,且使所得酸活白土的平均孔径有所提高,孔分布更为集中,孔洞数量和比表面积大大增加.The acid-modified kaolin was made by calcining kaolin at high temperature and then treating metakaolin with hydrochloric acid. The XRD?BET and IR techniques were employed to investigate the structure and charateristic of the acid-modified kaolin. The results showed that appropriate acid content and acid concentration could increase the acid sites, the surface area and pore size of kaolin and make the distribution of pore size more uniform.

关 键 词：酸改性高岭土 FCC催化剂 龙岩高岭土 催化裂化 石油 

分 类 号：TE624.9[石油与天然气工程—油气加工工程]