摘要
采用水热法合成大孔径硅磷酸铝分子筛(SAPO—5),并通过试验确定了SAPO-5分子筛的最佳合成条件。AIOOH为铝源,磷酸为磷源,正硅酸乙酯为硅源和三乙胺为模板剂(R)。晶化温度为200℃,晶化时间24h。原料(用氧化物的形式表示)SiO2、Al2O3、P2O5、R和H2O适宜的摩尔比为(0.60~2.40):1.00:1.00:1.00:1,00:40.00。并将合成出来的硅磷酸铝分子筛用于萘与丙烯的烷基化反应,进行了活性的研究。结果表明,在适宜的条件下,萘的转化率为97.56%,2,6-二异丙基萘(2,6-DIPN)的收率和选择性分别为40.06%和41.06%。
The silicoaluminophosphate molecular sieve (SAPO-5) with relative bigger pore diameter was synthesized hydrothermally and the optimum synthesis condition was determined through experiments. AIOOH was used as the aluminum source, orthophosphoric acid as the phosphor source, tetraethyl orthosilicate as silicon source and triethylamine as the template agent (R), a stainless steel autoclave with Teflon liner as the crystallizing kettle, crystallization temperature was 200 ℃, crystallization time was 24 h. The molar ratio of gel composition is SiO2 : Al2O3 : P2O5 : R : H2O = (0.60 ~ 2.40) : 1.00 : 1.00 : 1.00 : 1.00:40.00. The catalytic activity of SAPO-5 sieve was studied in the alkylation of naphthalene with propylene. The results showed that under certain condition the percent conversion of naphthalene was 97.56%, the yield and selectivity of 2,6- diisopropylnaphthalene (2,6-DIPN) was 40.06 % and 41.06 % respectively.
出处
《化学工业与工程》
CAS
2006年第2期133-137,共5页
Chemical Industry and Engineering
关键词
硅磷酸铝分子筛(SAPO-5)
蔡
丙烯
2
6-DIPN
silieoaluminophosphate molecular sieve ( SAPO-5 )
naphthalene
propylene
2, 6-diisopropylnaphthalene(2,6-DIPN)