Journal of Environmental Chemical Engineering ( IF 7.4 ) Pub Date : 2021-05-29 , DOI: 10.1016/j.jece.2021.105766 Muhammad Izham Shahbudin , Dennis Mathew Jacob , Mariam Ameen , Aqsha Aqsha , Mohammad Tazli Azizan , Mohd Hizami Mohd Yusoff , Farooq Sher
Aqueous phase reforming (APR) of sugar alcohols to produce hydrogen and value-added chemicals derived from renewable carbohydrates are becoming more promising nowadays. In the present study, Mo-Ni/Al2O3 and Mo-Ni/H-Y zeolite catalysts were synthesized using sonochemical approach employed for aqueous phase reforming of sorbitol and glycerol. The aqueous phase reforming reaction was conducted with 10 wt.% of sorbitol/glycerol in deionized water in an autoclave batch reactor. Several characterization techniques (TGA, XRD, BET, H2TPR and FESEM-EDX) were performed for all the synthesized catalysts. It was perceived from the characterization that Ni/H-Y zeolite catalysts possess better textural properties in term of particle dispersion and surface area compared to Al2O3 supported catalysts. Moreover, H-Y zeolite supported catalysts also offered better performances in term of the production of value-added chemicals where the selectivity of products is more than 20% compared to the Al2O3 supported catalysts. Some of the highly selective value-added chemicals identified were acetone, ethylene glycol 1,3-propanediol and glycerol in which 1%Mo-Ni/H-Y zeolite contributed the highest activity where the conversion is at 28.5% and 24.3% selectivity towards 1,3-propanediol in the APR of sorbitol. The most selective product in this study, 1,3-propanediol, is an expensive chemical, commonly used in polymer industries, and used as adhesives, coatings and an intermediate solvent.
中文翻译:
山梨糖醇和甘油在声合成镍基催化剂上水相重整生产液体增值化学品
糖醇的水相重整 (APR) 以生产氢气和源自可再生碳水化合物的增值化学品如今变得越来越有前途。在本研究中,Mo-Ni/Al 2 O 3和Mo-Ni/HY 沸石催化剂使用声化学方法合成,用于山梨醇和甘油的水相重整。水相重整反应 在高压釜间歇式反应器中用在去离子水中的10重量%的山梨糖醇/甘油进行。多种表征技术(TGA、XRD、BET、H 2对所有合成的催化剂进行了 TPR 和 FESEM-EDX)。从表征中可以看出,与 Al 2 O 3负载型催化剂相比,Ni/HY 沸石催化剂在颗粒分散性和表面积方面具有更好的结构特性。此外,HY沸石负载的催化剂在生产增值化学品方面也提供了更好的性能,与Al 2 O 3相比,产品的选择性超过20%负载型催化剂。鉴定出的一些高选择性增值化学品是丙酮、乙二醇 1,3-丙二醇和甘油,其中 1% Mo-Ni/HY 沸石的活性最高,转化率为 28.5%,对 1 的选择性为 24.3%,山梨糖醇 APR 中的 3-丙二醇。本研究中最具选择性的产品 1,3-丙二醇是一种昂贵的化学品,常用于聚合物工业,用作粘合剂、涂料和中间溶剂。