摘要
以硅胶湿样和铝矾土为原料,利用溶胶-水热法合成了亚微米4A分子筛,并采用XRD、SEM和FT-IR等分析手段与常规水热法合成的4A分子筛进行了对比。结果表明,采用溶胶-水热法制备的产品,结晶度为96%,形状规则、大小均匀、呈正态分布且分布范围较窄;粒度小于等于1μm的可达到100%;钙离子交换容量为335mgCa-CO3/g(干基)4A分子筛,白度为97%,完全满足洗涤助剂的要求。
The sub-micron 4A molecular sieve is hydrosol-hydrothermally synthesized using silica gel and bauxite and compared with the common 4A molecular sieve by XRD,SEM,FT-IR and so on. Results demonstrate that the erystallinity of the product is 96%, the shape of the product is in rules, which has the uniform size, the distribution of normal distribution is narrower and smaller, the crystal size smaller than 1μm is 100 %, the calcium exchangeability of the products is 335mg CaCOa/g dried 4A molecular sieve, the whiteness is 97 %, which make the products more suitable to be used as detergent builder.
出处
《材料导报》
EI
CAS
CSCD
北大核心
2009年第14期90-92,98,共4页
Materials Reports
基金
云南云天化国际化工股份有限公司项目(YTHIC-01-1116-006)
关键词
硅胶湿样
铝矾土
溶胶-水热法
亚微米4A分子筛
silica gel wettish sample, bauxite, hydrosol-hydrothermal method, sub-micron 4A molecular sieve