国产日韩欧美一区二区三区三州_亚洲少妇熟女av_久久久久亚洲av国产精品_波多野结衣网站一区二区_亚洲欧美色片在线91_国产亚洲精品精品国产优播av_日本一区二区三区波多野结衣 _久久国产av不卡

?

Bifunctional Catalyst for Direct Synthesis of Aromatics from Syngas Developed by the Wuhan University

2020-01-14 17:49:00
中國煉油與石油化工 2020年1期

Recently the R&D team of the Energy and Mechanical College of Wuhan University has developed a novel bifunctional catalyst for direct manufacture of aromatics via catalytic conversion of syngas. The said R&D team has designed and synthesized a hollow HZSM-5 zeolite which is coupled with the Fe3O4/MnO2catalyst capable of producing olefin-rich products, resulting in a novel bifunctional catalyst. This bifunctional catalyst when operating under commercial reaction conditions can achieve a CO conversion of more than 90% and an aromatics selectivity of 57%, while the catalytic stability can be maintained within 180 hours.This catalyst through the spatial limitations of core-shell structure of Fe3O4/MnO2and electronic modification of Mn co-catalyst can apparently promote the conversion of syngas into olefin intermediates, which can be further converted into the target aromatic products under the action of acidic sites of hollow HZSM-5 zeolite. The formation of cavity structure in hollow HZSM-5 zeolite and the shortened channel length have enhanced the diffusion of reactant molecules and product molecules, which are conducive to the formation of aromatics and can inhibit the accumulation of carbon deposits in the channels of zeolite to obviously improve the stability of the said catalyst.

吕梁市| 拜泉县| 和政县| 岚皋县| 都兰县| 屏边| 河北省| 子长县| 海丰县| 克什克腾旗| 靖安县| 岳普湖县| 莫力| 洛阳市| 山丹县| 阜康市| 镇沅| 婺源县| 延川县| 柏乡县| 离岛区| 西藏| 石景山区| 宁安市| 连城县| 重庆市| 弥渡县| 北流市| 湘阴县| 雅安市| 汝南县| 磐安县| 阳原县| 琼结县| 新兴县| 阿巴嘎旗| 皮山县| 安丘市| 保靖县| 太白县| 桓仁|