摘要
利用[S0H+][X-I+]自组装路线,在F127-TEOS-H2O-HCl(F127:(EO)106(PO)70(EO)106,TEOS:正硅酸乙酯)四元体系下合成了球形SBA-16,并用XRD、SEM、TEM、N2吸附-脱附进行了表征;同时研究了HCl量、模板剂量及温度对形貌的影响。研究表明,在合成的产物是SBA-16的前提下,较大HCl浓度(1.6～2.0mol/L)、适当的模板剂浓度(TEOS:F127=0.025～0.040),适中的反应温度(28～32℃)有助于球形形貌的合成。较优的反应摩尔比为1.00TEOS:0.0049F127:6.4HCl:167H2O,较优的反应温度为30℃。与其它方法相比,本法较为简单,不需要额外的微波辅助、模板剂或其它溶剂。
Highly ordered SBA-16 spheres with 2-6 μm in diameter were synthesized in a quaternary F127-H2O-HCl-TEOS system and characterized by XRD, SEM, TEM and N2 adsorption/desorption. The effect of various synthetic conditions such as HCl concentration, TEOS/surfactant ratio, silica and template source, and reaction temperature were investigated. The results show that a middle range of surfactant concentration (TEOS: F127=0.025-0.040), strong acidic conditions (1.6-2.0 mol/L HCl) and a moderate reaction temperature (28-32 ℃) were helpful for the syntheses. The optimal condition is 1.00 TEOS: 0.0049 F127: 6.4 HCl: 167 H2O in molecular ratio at 30 ℃.
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
2010年第S2期455-458,共4页
Rare Metal Materials and Engineering
基金
国家自然科学基金项目(20801050)
浙江省自然科学基金项目(Y4080114)
关键词
介孔材料
SBA-16
形貌控制
微球
mesoporous material
SBA-16
morphology control
micro-sphere
