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Energy‐Efficient 2‐Ethylhexyl Acetate Synthesis with a Nano‐Sn‐Hydroxyapatite Photocatalyst
Chemical Engineering & Technology ( IF 1.8 ) Pub Date : 2020-02-04 , DOI: 10.1002/ceat.201900402
Punam Mukhopadhyay 1 , Rajat Chakraborty 1
Affiliation  

A nano‐tin oxide grafted natural‐hydroxyapatite photocatalyst was fabricated using a greener approach involving sequential application of solar‐type and ultrasound‐wave energy (STUWE). The protocol provided 76 % higher surface area, 59 % more surface acidity, and 15 % reduced band gap energy than conventionally prepared photocatalysts (CPPCs). The efficacy of the STUWE‐promoted photocatalyst (STUWEPC) was optimized for maximization of 2‐ethylhexyl acetate yield (97 %) employing an energy‐efficient solar‐type/ultrasound synergistic batch reactor. A considerably lower activation energy, estimated by Langmuir‐Hinshelwood kinetics, and higher reusability characteristics (upto 8 recycles) of the STUWEPC than CPPC highlights the superiority of the STUWE procedure.

中文翻译:

纳米Sn-羟基磷灰石光催化剂高效节能地合成乙酸2-乙基己酯

纳米氧化锡接枝的天然羟基磷灰石光催化剂是采用绿色方法制造的,涉及顺序应用太阳能和超声波能量(STUWE)。与常规制备的光催化剂(CPPC)相比,该协议提供了76%的表面积增加,59%的表面酸度增加和15%的带隙能量减少。STUWE促进的光催化剂(STUWEPC)的功效已通过使用节能型太阳能型/超声协同间歇反应器进行了优化,以最大程度地提高乙酸2-乙基己酯的收率(97%)。根据兰格缪尔·欣斯伍德的动力学估计,活化能大大低于CPPC,而STUWEPC的可重用性特征(最多8个循环)比CPPC高,这凸显了STUWE程序的优越性。
更新日期:2020-02-04
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