当前位置：
X-MOL 学术
›
Ind. Eng. Chem. Res.
›
论文详情
Our official English website, www.x-mol.net, welcomes your
feedback! (Note: you will need to create a separate account there.)
Highly Active PEG-Modified HZSM-5 Zeolite for Cyclohexene Hydration to Cyclohexanol
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2024-08-21 , DOI: 10.1021/acs.iecr.4c01919 Shuailong Gu 1 , Xiaoping Wang 1 , Dianhua Liu 1
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2024-08-21 , DOI: 10.1021/acs.iecr.4c01919 Shuailong Gu 1 , Xiaoping Wang 1 , Dianhua Liu 1
Affiliation
|
Cyclohexanol is a key intermediate in the preparation of nylon materials. However, commercial catalysts for the preparation of cyclohexanol have low catalytic activity. We developed a method for the production of HZSM-5 zeolites by hydrothermal synthesis using the structural additive poly(ethylene glycol) (PEG) as a modifier. The amount of PEG added had an effect on the specific surface area and Bro̷nsted acid sites of the zeolites. The HZSM-5 zeolite prepared by PEG addition of 1.5 g had a large specific surface area, more Bro̷nsted acid sites, and a rich pore structure, which facilitated the exposure of more Bro̷nsted acid sites to HZSM-5 and the diffusion process of cyclohexene and cyclohexanol. Under the optimized reaction conditions of a reaction temperature of 130 °C, a reaction pressure of 0.95 MPa, a reaction time of 4 h, a cyclohexene to water volume ratio of 1:1, a stirring speed of 600 rpm, and a catalyst dosage of 35 wt %, the catalytic performance of 1.5 g of PEG-modified HZSM-5 was better, with 15.93% cyclohexene conversion and 99.35% cyclohexanol selectivity. The PEG-modified HZSM-5 zeolite still maintained a high catalytic performance after five reuse cycles.
中文翻译：
高活性 PEG 改性 HZSM-5 沸石用于环己烯水合生成环己醇
环己醇是制备尼龙材料的关键中间体。然而，用于制备环己醇的商业催化剂催化活性较低。我们开发了一种使用结构添加剂聚乙二醇（PEG）作为改性剂通过水热合成生产 HZSM-5 沸石的方法。 PEG 的添加量对沸石的比表面积和布朗斯台德酸位有影响。添加1.5 g PEG制备的HZSM-5沸石具有较大的比表面积、较多的布朗斯台德酸位和丰富的孔结构，有利于更多的布朗斯台德酸位对HZSM-5的暴露以及环己烯和环己烯的扩散过程。环己醇。优化反应条件为反应温度130 ℃、反应压力0.95 MPa、反应时间4 h、环己烯与水体积比1:1、搅拌速度600 rpm、催化剂用量35 wt%时，1.5 g PEG修饰的HZSM-5催化性能较好，环己烯转化率为15.93%，环己醇选择性为99.35%。 PEG修饰的HZSM-5沸石在5次循环使用后仍保持较高的催化性能。
更新日期：2024-08-23
中文翻译：
高活性 PEG 改性 HZSM-5 沸石用于环己烯水合生成环己醇
环己醇是制备尼龙材料的关键中间体。然而，用于制备环己醇的商业催化剂催化活性较低。我们开发了一种使用结构添加剂聚乙二醇（PEG）作为改性剂通过水热合成生产 HZSM-5 沸石的方法。 PEG 的添加量对沸石的比表面积和布朗斯台德酸位有影响。添加1.5 g PEG制备的HZSM-5沸石具有较大的比表面积、较多的布朗斯台德酸位和丰富的孔结构，有利于更多的布朗斯台德酸位对HZSM-5的暴露以及环己烯和环己烯的扩散过程。环己醇。优化反应条件为反应温度130 ℃、反应压力0.95 MPa、反应时间4 h、环己烯与水体积比1:1、搅拌速度600 rpm、催化剂用量35 wt%时，1.5 g PEG修饰的HZSM-5催化性能较好，环己烯转化率为15.93%，环己醇选择性为99.35%。 PEG修饰的HZSM-5沸石在5次循环使用后仍保持较高的催化性能。
京公网安备 11010802027423号