Gupta Unnati, Krishnapriya R, Sharma Rakesh K
Unnati Gupta, Dr. R. Krishnapriya and Prof. Rakesh K Sharma*, Sustainable Materials and Catalysis Research Laboratory (SMCRL), Department of Chemistry, Indian Institute of Technology Jodhpur, Jodhpur, Rajasthan, 342037, India.
Chempluschem. 2021 Apr;86(4):540-548. doi: 10.1002/cplu.202000760. Epub 2020 Dec 23.
A series of palladium nanoparticles (Pd NPs) intercalated montmorillonite clay catalysts is reported for hydrogenation of 3-diphenyl prop-2-en-1-imine under mild reaction conditions. Pd/clay catalyst was prepared by a simple wet-impregnation method, and the physicochemical properties were characterized extensively by various techniques including N adsorption, XRD, TEM, XPS and TPR etc., which showed the intercalation of active Pd NPs between the clay layers. The effect of reaction conditions such as catalyst loading, reaction time, temperature and H pressure is explored, and thereby a plausible mechanism is proposed. The optimum amount of 6 wt % Pd/clay catalyst showed significant catalytic activity to yield 3-phenyl propyl aniline with 100 % conversion and selectivity under 5 bar pressure and a shorter reaction period of 3.5 h at 100 °C. The developed catalytic system unveiled excellent reusability over five cycles and hence paved the way for industrial applications.
报道了一系列钯纳米颗粒（Pd NPs）插层蒙脱石粘土催化剂，用于在温和反应条件下氢化3-二苯基丙-2-烯-1-亚胺。通过简单的湿浸渍法制备了Pd/粘土催化剂，并通过包括N吸附、XRD、TEM、XPS和TPR等各种技术对其物理化学性质进行了广泛表征，结果表明活性Pd NPs插层在粘土层之间。探索了催化剂负载量、反应时间、温度和H压力等反应条件的影响，从而提出了一个合理的机理。6 wt% Pd/粘土催化剂的最佳用量在5 bar压力和100°C下3.5 h的较短反应时间内表现出显著的催化活性，可使3-苯基丙基苯胺的转化率和选择性达到100%。所开发的催化体系在五个循环中展现出优异的可重复使用性，因此为工业应用铺平了道路。
