Lee Jin-Sil, Kim Sang-Yun, Kwon Soo-Jin, Kim Tae-Wan, Jeong Soon-Young, Kim Chul-Ung, Lee Kwan-Young
Center for Convergent Chemical Process, Korea Research Institute of Chemical Technology, 141 Gajeong-ro, Yuseong-gu, Daejeon 34114, Republic of Korea.
Department of Chemical and Biological Engineering, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, Republic of Korea.
J Nanosci Nanotechnol. 2018 Feb 1;18(2):1419-1422. doi: 10.1166/jnn.2018.14893.
p-Xylene (PX) is an important large-volume commodity chemical in the petrochemical industry. Therefore, research on producing PX from bio-mass-derived resources is a considerable interest in relation to future alternative technologies. Recently, a new potential route for the direct and selective production of bio-based PX was reported, referred to as the Diels-Alder cycloaddition of biomassderived 2,5-dimethylfuran (DMF) and ethylene followed by the dehydration of an intermediate. Here, we prepared tungstated zirconia (WOx-ZrO2) materials at different calcination temperatures and times as solid acid catalysts for PX production. From structural analyses and measurements of the surface acidity, the WOx-ZrO2 was found to be composed of mesopores with high surface acidity within the optimum calcination temperature and time range. This WOx-ZrO2 catalyst exhibited high catalytic activity upon the cycloaddition of DMF with ethylene as compared to commercial beta zeolite and previously reported silica-alumina catalysts.
对二甲苯（PX）是石化行业中一种重要的大宗化工产品。因此，研究从生物质衍生资源生产PX对于未来的替代技术具有相当大的吸引力。最近，报道了一种直接和选择性生产生物基PX的新潜在途径，即生物质衍生的2,5 - 二甲基呋喃（DMF）与乙烯的狄尔斯 - 阿尔德环加成反应，随后中间体脱水。在此，我们在不同的煅烧温度和时间下制备了钨酸锆（WOx-ZrO2）材料作为生产PX的固体酸催化剂。通过结构分析和表面酸度测量发现，在最佳煅烧温度和时间范围内，WOx-ZrO2由具有高表面酸度的中孔组成。与商业β沸石和先前报道的硅铝催化剂相比，这种WOx-ZrO2催化剂在DMF与乙烯的环加成反应中表现出高催化活性。
