文献类型：期刊文献

英文题名：Reactive Adsorption Desulfurization of Hydrotreated Diesel over a Ni/ZnO-Al2O3-SiO2 Adsorbent

作者：Ju, Feng[1];Liu, Changjun[1];Meng, Chun[2];Gao, Shuai[2];Ling, Hao[2]

机构：[1]E China Univ Sci & Technol, Minist Educ, Key Lab Pressurized Syst & Safety, Shanghai 200237, Peoples R China;[2]E China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China

年份：2015

卷号：29

期号：9

起止页码：6057

外文期刊名：ENERGY & FUELS

收录：;EI(收录号：20153901300668);WOS:【SCI-EXPANDED(收录号:WOS:000363068200056)】；

基金：The support from the Fundamental Research Funds for the Central Universities of China is gratefully acknowledged.

语种：英文

外文关键词：II-VI semiconductors - High resolution transmission electron microscopy - Scanning electron microscopy - Sintering - X ray diffraction - Zinc sulfide - Adsorbents - Silica - Sulfur - Temperature programmed desorption - Chemical reactors

摘要：A high-performance Ni/ZnO-Al2O3-SiO2 adsorbent was developed for reactive adsorption desulfurization (RADS) of diesel. The desulfurization performance of the prepared adsorbents was evaluated in a fixed-bed reactor for treating a hydrotreated diesel with a sulfur content of 1187 ppm. The preparation conditions were investigated, such as aging time, aging temperature, metallic ion concentration, and precipitation temperature. Results showed that the adsorbents performed at a high desulfurization efficiency under the mild preparation conditions. This indicated that smaller crystalline grains were favorable for desulfurization over the Ni/ZnO-Al2O3-SiO2 adsorbent. The adsorbent attained a high adsorption ability of 38.4 mg/g at a breakthrough sulfur level of 20 ppm. The mechanism of deactivation of the adsorbent was also studied and discussed by various characterizations, such as N-2 physisorption, powder X-ray diffraction (XRD), ammonia temperature-programmed desorption (NH3-TPD), transmission electron microscopy (TEM), and scanning electron microscopy/energy-dispersive spectrometry (SEM/EDS). The main reasons of the deactivation of the RADS adsorbent include the carbon deposition, the formation of ZnS, and the sintering of the active and support.