Alharthi Abdulrahman I, Alotaibi Mshari A, Alansi Amani M, Qahtan Talal F, Ali Imtiaz, Al-Shalwi Matar N, Bakht Md Afroz
Chemistry Department, College of Science and Humanities Studies, Prince Sattam Bin Abdulaziz University, P.O. Box 83, Al-Kharj 11942, Saudi Arabia.
Chemistry Department, King Saud University, Riyadh 12372, Saudi Arabia.
Materials (Basel). 2023 Apr 2;16(7):2835. doi: 10.3390/ma16072835.
The chemical industry is one of the main fossil fuel consumers, so its reliance on sustainable and renewable resources such as wind and solar energy should be increased to protect the environment. Accordingly, solar-driven thermocatalytic synthesis of octahydroquinazolinone using polyvinylchloride (PVC)-supported aluminum oxide (AlO) as a catalyst under natural sunlight is proposed in this work. The AlO/PVC catalysts were characterized by FT-IR, SEM, BET, XRD, and XPS techniques. The obtained results indicate that the yield and reaction time can be modified by adjusting the molar ratio of the catalyst. To investigate the stability of the catalyst, the spent catalyst was reused in several reactions. The results indicated that, when a 50% AlO catalyst is employed in an absolute solar heat, it performs exceptionally well in terms of yield (98%) and reaction time (35 min). Furthermore, the reaction times and yield of octahydroquinazolinone derivatives with an aryl moiety were superior to those of heteroaryl. All the synthesized compounds were well characterized by FT-IR, H-NMR, and C-NMR. The current work introduces a new strategy to use solar heat for energy-efficient chemical reactions using a cost-effective, recyclable environmentally friendly PVC/AlO catalyst that produces a high yield.
化学工业是主要的化石燃料消费行业之一，因此应增加其对风能和太阳能等可持续和可再生资源的依赖，以保护环境。据此，本文提出在自然阳光下，以聚氯乙烯（PVC）负载的氧化铝（AlO）为催化剂，太阳能驱动热催化合成八氢喹唑啉酮。采用傅里叶变换红外光谱（FT-IR）、扫描电子显微镜（SEM）、比表面积分析仪（BET）、X射线衍射仪（XRD）和X射线光电子能谱仪（XPS）对AlO/PVC催化剂进行了表征。所得结果表明，通过调节催化剂的摩尔比可以改变产率和反应时间。为了研究催化剂的稳定性，将用过的催化剂在几个反应中重复使用。结果表明，当使用50%的AlO催化剂进行绝对太阳能加热时，其在产率（98%）和反应时间（35分钟）方面表现出色。此外，含芳基部分的八氢喹唑啉酮衍生物的反应时间和产率优于含杂芳基的衍生物。所有合成化合物均通过FT-IR、氢核磁共振（H-NMR）和碳核磁共振（C-NMR）进行了很好的表征。当前工作引入了一种新策略，即使用太阳能热通过一种具有成本效益、可回收的环保PVC/AlO催化剂进行节能化学反应，该催化剂能产生高产率。
