Novel method for synthesis of titanium silicalite-1 (TS-1)

来源 :Chinese Journal of Chemistry | 被引量 : 0次 | 上传用户:oskarguan
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
Titanium silicalite-1 (TS-1) was easily synthesized using inorganic silicon and titanium source, tetrapropylammonium bromide (TPABr) or TPAOH as templating molecule, NH3· H2O, HDA or TEAOH etc. as base sources. In this system, TPA+ cations (come from TPABr or TPAOH) served as tern-plating agents to direct the MFI structure. NH3H2O, TEAOH or HDA etc. provides the alkalinity necessary for crystallization. X-ray diffraction, UV-Vis, ER spectroscopies, SEM, 29 Si MAS NMR showed that the zeolites obtained possessed all the structural characteristics of TS-1, and titanium atoms were introduced into the framework in TS-1. This material was proved to have high crystallinity and high catalytic activity to allyl chloride epoxidation and propylene epoxidation. All the samples synthesized had similar catalytic properties with a standard TS-1 through compared inorganic reactant system with organic synthesis system using propylene epoxidation. The effects of silicon source and TPABr/SiO2 ratio were discussed. Titanium silicalite-1 (TS-1) was readily synthesized using inorganic silicon and titanium source, tetrapropylammonium bromide (TPABr) or TPAOH as templating molecule, NH3 · H2O, HDA or TEAOH etc. as base sources. In this system, TPA + cations ( X-ray diffraction, UV-Vis, ER spectroscopies, SEM, 29 Si MAS NMR showed that the zeolites obtained possessed all the structural characteristics of TS-1, and titanium atoms were introduced into the framework in TS-1. This material was proved to have high crystallinity and high catalytic activity to allyl chloride epoxidation and propylene epoxidation. All the samples synthesized similar similar catalytic properties with a standard TS-1 through compared inorganic reactant system with organic synthesis system using propylene epoxidation. The effects of silicon source and TPABr / SiO2 ratio were discussed.
其他文献
The separation of Co 2+ from Zn 2+ , Cd 2+ by anion exchange chromatography was discussed. The chromatographic column containing anion resin 201
复方鱼肝油软膏治疗尿布皮炎杨品仙(昆钢职工医院皮肤科650302)我们用复方鱼肝油软膏外用治疗23例(男9例,女14例。年龄最小5天,最大35天)婴儿尿布皮炎,治疗6天后,20例痊愈(86.6%),3例有效(13.1%)。复方鱼肝油软膏主要成
巨细胞病毒(CMV)是引起先天性感染和导致胎儿初生缺陷重要原因之一,但传统病毒分离技术操作复杂,ELISA方法敏感性、特异性低,临床难以推广。我们应用近来发展起来的PCR技术,方法简
为探讨合胞病毒(RSV)肺炎合并细菌感染的发生率,我们对102例婴幼儿RSV肺炎患者,血清粒细胞集落刺激因子(G-CSF)进行了检测,并与C-反应蛋白(CRP)对照,结果报告如下。1资料与方法1.1一般资
本文阐述了高等师范院校对化学教育专业学生管理方面的几点经验.作者根据本专业的学科特点,并结合当前化学系学生在实际学习、生活中所存在的问题:总结出“三个结合。”在思
Two novel heterocyclic diamine monomers: 1,2-dihydro-2-(4-aminophenyl)-4-[ 4-( 4-aminophenoxy) phenyl ]-(2H )-phtha-lazin-1-one and 1, 2-dihydro-2-( 4-aminophe
中国药理学报中华内科杂志华西医科大学学报亚洲太平洋公共卫生学报 (香港 )中华病理学杂志华西口腔医学杂志细胞研究中华实验和临床病毒学杂志遗传学报中华医学杂志 (英文版
陆相地层发育普遍认为是受构造控制的,然而在构造背景下,其它控制因素如水位或水量、沉积物供给量等是如何起作用的呢?根据Schlische的伸展盆地定量充填模型,模拟阜新盆地沙海组和阜新组地
早期新生儿细菌感染,与母产前、产时高危因素有密切关系,是新生儿死亡的重要原因之一,我院94年共出生活产新生儿3003名,发生早期新生儿感染126例,感染发生率为4.2%,死亡9例,病死率为7.1
小儿癫痫脑血流SPECT显像与CT、MRI、EEG的对比分析马志海王为民张放林吴晓凤张贵峰宋惠宁徐晓红王葵癫痫是儿童神经系统的常见病,随着神经外科的发展,采用手术和γ刀治疗的患者逐渐增多。因