文献类型：期刊文献

中文题名：丙烯腈-二乙烯苯偕胺肟微球树脂的制备及对镓、钒的共吸附性能研究

英文题名：Preparation of Acrylonitrile-Divinylbenzene Amidoxime Microsphere Resin and Study on Its Co-adsorption Performance for Gallium and Vanadium

作者：谢江琴 殷红霞 余庭枭 何富 吴雨杰 李杨 谢礼兰 童海

第一作者：谢江琴

机构：[1]贵州师范大学材料与建筑工程学院,贵州贵阳550025;[2]贵州理工学院材料与能源工程学院,贵州贵阳550003;[3]贵州海皓新材料有限责任公司,贵州遵义563199

第一机构：贵州师范大学材料与建筑工程学院,贵州贵阳550025

年份：2026

卷号：54

期号：5

起止页码：1-6

中文期刊名：塑料科技

外文期刊名：Plastics Science and Technology

收录：;北大核心:【北大核心2023】；

基金：国家自然科学基金项目(52363009);中央引导地方重大成果转化项目(黔科合中引地[2024]030)。

语种：中文

中文关键词：丙烯腈-二乙烯苯微球;悬浮聚合;镓;钒;吸附

外文关键词：Acrylonitrile-divinylbenzene microspheres;Suspension polymerization;Gallium;Vanadium;Adsorption

摘要：将丙烯腈(AN)和二乙烯苯(DVB)通过悬浮聚合制备成丙烯腈-二乙烯苯(AN-DVB)微球,以盐酸羟胺复配液碱对其表面腈基进行胺肟化,研究胺肟化AN-DVB(AN-DVB-AO)微球的表面结构,以红外光谱(FTIR)、X射线衍射(XRD)及扫描电子显微镜(SEM)等分析AN-DVB-AO微球对拜耳法循环母液中镓、钒的吸附和解吸过程。结果表明:盐酸羟胺胺化后微球表面的腈基已全部转化为肟基。第1个使用周期AN-DVB-AO微球对镓、钒的饱和吸附量分别达到13.12 mg/g和6.39 mg/g。循环使用过程中微球对镓的饱和吸附量逐渐下降,同时表面吸附的钒并不影响树脂对镓的吸附。多次循环吸附-解吸过程中AN-DVB-AO微球表层分子链以及肟基基本不受影响,但随着使用次数的增加,小球表面附着的大量Al(OH)3占据吸附位点,解吸过程中不能被解吸进而影响镓、钒的饱和吸附量。循环使用第14个周期,微球对镓和钒的饱和吸附量分别为6.22 mg/g和4.04 mg/g,相对初始状态分别下降52.59%和36.78%。
Acrylonitrile(AN)and divinylbenzene(DVB)were polymerized via suspension polymerization to prepare AN-DVB microspheres.The surface nitrile groups were subsequently amidoximated using a compound solution of hydroxylamine hydrochloride and liquid alkali,and the surface structure of the amidoximated AN-DVB(AN-DVB-AO)microspheres was investigated.Fourier transform infrared spectroscopy(FTIR),X-ray diffraction(XRD),and scanning electron microscopy(SEM)were employed to analyze the adsorption and desorption processes of gallium and vanadium from Bayer process circulating liquor onto the AN-DVB-AO microspheres.The results showed that the nitrile groups on the microsphere surface were completely converted to amidoxime groups after amination with hydroxylamine hydrochloride.In the first use cycle,the saturated adsorption capacities of the AN-DVB-AO microspheres for gallium and vanadium reached 13.12 mg/g and 6.39 mg/g,respectively.During cyclic utilization,the saturated adsorption capacity for gallium gradually decreased,while the vanadium adsorbed on the surface did not affect the adsorption of gallium.Throughout multiple adsorption-desorption cycles,the molecular chains and amidoxime groups in the surface layer of the AN-DVB-AO microspheres remained essentially unaffected.However,with increasing use cycles,substantial Al(OH)3 attached to the microsphere surface occupied the adsorption sites and could not be desorbed during the regeneration process,thereby reducing the saturated adsorption capacities for gallium and vanadium.By the 14th cycle,the saturated adsorption capacities for gallium and vanadium decreased to 6.22 mg/g and 4.04 mg/g,representing reductions of 52.59%and 36.78%relative to the initial state,respectively.