Du Zhou, Li Renyi, Shen Zhenghui, Hai Xiao, Zou Ruqiang
Beijing Key Laboratory for Theory and Technology of Advanced Battery Materials, School of Materials Science and Engineering, Peking University, No. 5 Yiheyuan Road, Haidian District, Beijing 100871, China.
Yanshan Branch, SINOPEC (Beijing) Research Institute of Chemical Industry Co., Ltd., No. 15 Fenghuangting Road, Fangshan District, Beijing 102500, China.
Nanomaterials (Basel). 2024 Nov 30;14(23):1934. doi: 10.3390/nano14231934.
C4 and C5 fractions are significant by-products in the ethylene industry, with considerable research and economic potential when processed through hydrogenation technology to enhance their value. This study explored the development of hydrotreating catalysts using composite oxides as carriers, specifically enhancing low-temperature performance by incorporating electronic promoters and employing specialized surface modification techniques. This approach enabled the synthesis of non-noble metal hydrogenation catalysts supported on AlO-TiO composite oxides. The catalysts were characterized using various techniques, including X-ray diffraction, N adsorption-desorption, scanning electron microscopy, X-ray photoelectron spectroscopy, ammonia temperature-programmed desorption, infrared spectroscopy, and transmission electron microscopy. Mo-Ni/AlO-TiO catalysts were optimized for low-temperature hydrotreating of C4 and C5 fractions, demonstrating stable performance at inlet temperatures far below those typically required. This finding enables a shift from traditional gas-phase to gas-liquid two-phase reactions, eliminating the need for high-pressure steam in industrial settings. As a result, energy consumption is reduced, and operational stability is significantly improved.
C4和C5馏分是乙烯工业中的重要副产品，通过氢化技术进行加工以提高其价值时，具有可观的研究和经济潜力。本研究探索了以复合氧化物为载体的加氢处理催化剂的开发，特别是通过引入电子助剂和采用特殊的表面改性技术来提高低温性能。这种方法能够合成负载在AlO-TiO复合氧化物上的非贵金属加氢催化剂。使用多种技术对催化剂进行了表征，包括X射线衍射、N吸附-脱附、扫描电子显微镜、X射线光电子能谱、氨程序升温脱附、红外光谱和透射电子显微镜。Mo-Ni/AlO-TiO催化剂针对C4和C5馏分的低温加氢处理进行了优化，在远低于通常所需的入口温度下表现出稳定的性能。这一发现使得从传统的气相反应转变为气液两相反应成为可能，消除了工业环境中对高压蒸汽的需求。结果，能源消耗降低，操作稳定性显著提高。
