Ahmad Muhammad Sheraz, Ab Rahim Mohd Hasbi, Alqahtani Tariq Mohammed, Witoon Thongthai, Lim Jun-Wei, Cheng Chin Kui
Department of Chemical Engineering, College of Engineering, Universiti Malaysia Pahang, Lebuhraya Tun Razak, 26300, Gambang, Pahang, Malaysia.
Faculty of Industrial Sciences and Technology, Universiti Malaysia Pahang, Malaysia.
Chemosphere. 2021 Aug;276:130128. doi: 10.1016/j.chemosphere.2021.130128. Epub 2021 Mar 1.
Over the past decades, research efforts are being devoted into utilizing the biomass waste as a major source of green energy to maintain the economic, environmental, and social sustainability. Specifically, there is an emerging consensus on the significance of glycerol (an underutilised waste from biodiesel industry) as a cheap, non-toxic, and renewable source for valuable chemicals synthesis. There are numerous methods enacted to convert this glycerol waste to tartronic acid, mesoxalic acid, glyceraldehyde, dihydroxyacetone, oxalic acid and so on. Among these, the green electro-oxidation technique is one of the techniques that possesses potential for industrial application due to advantages such as non-toxicity process, fast response, and lower energy consumption. The current review covers the general understanding on commonly used techniques for alcohol (C & C) conversion, with a specific insight on glycerol (C) electro-oxidation (GOR). Since catalysts are the backbone of chemical reaction, they are responsible for the overall economy prospect of any processes. To this end, a comprehensive review on catalysts, which include noble metals, non-noble metals, and non-metals anchored over various supports are incorporated in this review. Moreover, a fundamental insight into the development of future electrocatalysts for glycerol oxidation along with products analysis is also presented.
在过去几十年中，研究工作致力于将生物质废物作为绿色能源的主要来源，以维持经济、环境和社会的可持续性。具体而言，对于甘油（生物柴油行业一种未充分利用的废物）作为一种廉价、无毒且可再生的有价值化学品合成原料的重要性，人们已逐渐达成共识。已经制定了许多方法将这种甘油废物转化为酒石酸、中草酸、甘油醛、二羟基丙酮、草酸等。其中，绿色电氧化技术是由于其无毒工艺、快速响应和较低能耗等优点而具有工业应用潜力的技术之一。本综述涵盖了对常用的醇（C&C）转化技术的一般理解，并特别深入探讨了甘油（C）电氧化（GOR）。由于催化剂是化学反应的核心，它们决定了任何工艺的整体经济前景。为此，本综述对包括负载在各种载体上的贵金属、非贵金属和非金属在内的催化剂进行了全面综述。此外，还对未来用于甘油氧化的电催化剂的发展以及产物分析进行了基本的探讨。
