One-step synthesis of sulfonic acid functionalized hyper-crosslinked polymer solid acid catalyzed by sulfuric acid
ZHOU Zijian, WANG Cui, PAN Huajie, MA Xueping, JING Shuaiqi, SHEN Shuguang
Journal of Functional Materials . 2020, (9): 9114 -9119 .  DOI: 10.3969/j.issn.1001-9731.2020.09.017