摘要
首次利用吸附态模板剂在Ｎａ２Ｏ－ＳｉＯ２－Ｂ２Ｏ３－ＤＥＡ（乙二胺）干粉体系中合成了杂原子Ｂ－ＺＳＭ３５－沸石，并采用ＸＲＤ、ＳＥＭ、ＩＲ及ＣＯ加氢反应研究了其物理化学特性。结果表明，Ｂ原子同晶取代Ａｌ原子进入了ＺＳＭ－３５沸石骨架；与水热体系合成的同种沸石相比，干粉体系合成的Ｂ－ＺＳＭ－３５沸石晶胞体积出现明显收缩，从而在ＣＯ加氢直接合成低碳烯烃反应中对Ｃ＝２～Ｃ＝４烯烃表现出更好的选择性。
Heteroatomic B ZSM 35 zeolite was synthesized from adry poder ystemofNa 2 O SiO 2 B 2 O 3 EDA(ethylenediamine)with an adsorbed state template and wascharacterizedby means of XRD,SEM and IR It was shown that Batoms have substitutedtheAl atoms in the framework and thus led to ashrinkage in unit cell volume Comparingwithhydrothermal method,the dry powder synthesis has added further shrinkage to the B ZSM 35 sample The sample also exhibited an elevated selectivity for C = 2C = 4 olefins in COhydrogenation
出处
《燃料化学学报》
EI
CAS
CSCD
北大核心
1997年第1期16-20,共5页
Journal of Fuel Chemistry and Technology
关键词
沸石
杂原子
干法合成
加氢反应
催化剂
zeolite,ZSM 35,heteroatomic,dry method synthesis,CO hydrogenation
