文献类型：期刊文献

英文题名：A green and efficient strategy for utilizing of coal fly ash to synthesize K-MER zeolite as catalyst for cyanoethylation and adsorbent of CO2

作者：Chen, Wenting Song, Guoqiang Lin, Youyuan Qiao, Jintao Wu, Tonghua Yi, Xingyuan Kawi, Sibudjing

第一作者：Chen, Wenting

通信作者：Kawi, S[1];Song, GQ[2]

机构：[1]Jiangxi Normal Univ, Coll Chem & Chem Engn, 437th Beijing West Rd, Nanchang 330027, Jiangxi, Peoples R China;[2]Guizhou Inst Technol, Sch Chem Engn, 1st Caiguan Rd, Guiyang 550003, Guizhou, Peoples R China;[3]Guizhou JiRuiYuan Ind Co Ltd, Faer Ind Pk, Liupanshui City 553017, Guizhou, Peoples R China;[4]Guizhou ShiXin Basalt Technol Co Ltd, Basalt Sci & Technol Ind Pk, Liupanshui City 553017, Guizhou, Peoples R China;[5]Natl Univ Singapore, Dept Chem & Biomol Engn, Singapore 117585, Singapore

第一机构：Jiangxi Normal Univ, Coll Chem & Chem Engn, 437th Beijing West Rd, Nanchang 330027, Jiangxi, Peoples R China

通信机构：corresponding author), Natl Univ Singapore, Dept Chem & Biomol Engn, Singapore 117585, Singapore;corresponding author), Guizhou Inst Technol, 1st Caiguan Rd, Guiyang 550003, Guizhou, Peoples R China.|贵州理工学院;

年份：2021

卷号：326

外文期刊名：MICROPOROUS AND MESOPOROUS MATERIALS

收录：;EI(收录号：20213310784341);Scopus(收录号：2-s2.0-85112517488);WOS:【SCI-EXPANDED(收录号:WOS:000697050000001)】；

基金：This work was supported by National Natural Science Foundation of China (22062003), Guizhou Provincial Natural Science Foundation ([2019]2872 and [2020]1Y037), Youth Science and Technology Talent Development Project from Guizhou Provincial Department of Education (QianJiaoHe KY [2021]253), Liupanshui Science and Technology Supporting Foundation (52020-2018-01-04, H2020-003) and Startup Project for High-level Talents of Guizhou Institute of Technology (XJGC20190902).

语种：英文

外文关键词：Coal fly ash; Microwave; Ultrasound; Silicon extraction; MER Zeolite

摘要：K-MER zeolites of great crystallinity and purity have been synthesized from coal fly ash (CFA) with the method of microwave and ultrasound collaborative activation (MUCA) for the first time, which significantly improving the extraction efficiency of required components (Si and Al) from CFA in lower energy consumption. After activated in 4 mol/L potassium hydroxide solution for 1 h at 100 degrees C, the conversion rate of CFA reaches to 53.80 wt% as well as the molar conversion rate of silicon is 75.39%, greatly enhanced in comparison with the methods of only microwave or ultrasound. The MER samples of various morphologies have been prepared through comprehensively adjustments of crystallization time, pressures and dynamic pressure programs. The maximum adsorption volume of CO2 is 47.58 cm3/g at 25 degrees C as well as 36.55 cm3/g at 0 degrees C and 34.16 cm3/g at 50 degrees C. Furthermore, the as-obtained MER zeolites have been utilized as catalysts in cyanoethylatic reaction between methanol and acrylonitrile. The conversion rate of acrylonitrile finally reached up to as high as 99 wt% after reacting for 30 min with pre-pressure of 1.5 MPa. The method of MUCA will provide a new strategy for green utilization and high value-added conversion of CFA.