摘要
用水热晶化法成功地合成了不同ＳｉＯ＿２／ＴｉＯ＿２比的Ｔｉ－ＺＳＭ－１１沸石。对其结构进行了ＸＲＤ、ＩＲ、ＳＥＭ、ＴＧ－ＤＴＡ、２９￣ＳｉＭＡｓＮＭＲ及ＵＶ－ＶＩＳ光谱表征，肯定了所合成的沸石为ＺＳＭ－１１型结构，且钛原子已进入了沸石骨架，核沸石骨架热稳定性超过１４７３Ｋ。从氯丙烯与Ｈ＿２Ｏ＿２的环氧化结果看，Ｔｉ－ＺＳＭ－１１沸石对烯烃环氧化反应亦有较好的催化作用，但总的催化效率不如Ｔｉ－ＺＳＭ－５沸石。
Ti-ZSM-11 zeolites have been synthesized from silica-titania-TBAOH-H_2O system byhydrothermal method and all samples characterized by XRD,IR, SEM,TG-DTA,￣(29)Si MASNMR, and UV-VIS Diffuse Reflectance spectra. The characterization confirms that titanium.is present in the framework position and thermal stability of framework is over 1473K. Fromthe catalytic epoxidation of allylchloride, it is found that Ti-ZSM-ll11 zeolite has high yieldof epoxide too, but its catalytic efficiency is less than that of Ti-ZSM-5.
出处
《石油化工》
EI
CAS
CSCD
北大核心
1994年第11期716-719,共4页
Petrochemical Technology
关键词
沸石
合成
表征
烯烃
环氧化
水热晶化法
Ti-ZSM-11 zeolite, hydrothermal synthesis , characterization, oxidation,epoxi-dation
