Utami Maisari, Trisunaryanti Wega, Shida Kenji, Tsushida Masayuki, Kawakita Hidetaka, Ohto Keisuke, Wijaya Karna, Tominaga Masato
Department of Chemistry, Universitas Islam Indonesia Yogyakarta 55584 Indonesia.
Department of Chemistry, Universitas Gadjah Mada Yogyakarta 55281 Indonesia
RSC Adv. 2019 Dec 13;9(71):41392-41401. doi: 10.1039/c9ra08834b.
A platinum-loaded sulphated nanozirconia (Pt/nano ZrO-SO) bifunctional metal-acid catalyst was synthesized using a hydrothermal process. The nano ZrO-SO was initially prepared by dispersing the nano ZrO in HSO, followed by wet impregnation heating in an aqueous PtCl solution. This material was subsequently calcined and reduced under hydrogen gas to produce the catalyst. The Pt/nano ZrO-SO was found to be a highly active, selective and stable solid acid catalyst for the conversion of waste low density polyethylene (LDPE) to high value hydrocarbons. The catalytic activity and stability of this material were evaluated during the hydrocracking of waste LDPE while optimizing the reaction temperature, time and catalyst-to-feed ratio. The activity of catalyst prepared by hydrothermal was attributed to highly dispersion of Pt species interacting with the support and inhibition of the agglomeration process. The impregnation method of hydrothermal generated highly active and selective catalyst with Pt loads of 1 wt%. The hydrocracking of waste LDPE over Pt/nanoZrO-SO at 250 °C for 60 min with a catalyst-to-feed proportion of 1 wt% gave the largest gasoline fraction.
采用水热法合成了负载铂的硫酸化纳米氧化锆（Pt/纳米ZrO-SO）双功能金属-酸催化剂。纳米ZrO-SO最初是通过将纳米ZrO分散在HSO中，然后在PtCl水溶液中进行湿浸渍加热来制备的。随后对该材料进行煅烧并在氢气下还原以制备催化剂。发现Pt/纳米ZrO-SO是一种用于将废弃低密度聚乙烯（LDPE）转化为高价值烃类的高活性、选择性和稳定性的固体酸催化剂。在废弃LDPE的加氢裂化过程中，在优化反应温度、时间和催化剂与进料比的同时，评估了该材料的催化活性和稳定性。水热法制备的催化剂的活性归因于Pt物种与载体相互作用的高度分散以及对团聚过程的抑制。水热浸渍法制备了Pt负载量为1 wt%的高活性和选择性催化剂。在250℃下，以1 wt%的催化剂与进料比例，在Pt/纳米ZrO-SO上对废弃LDPE进行60分钟的加氢裂化，得到了最大的汽油馏分。
