本文主要研究内容
作者刘晓玲（2019）在《铋系和负载型催化剂的制备及其对光催化有机合成反应的性能研究》一文中研究指出：长期以来,环境污染问题和能源危机问题是一直影响人类生存的两大问题,科学家研究了许多方法来解决这两大难题,其中半导体光催化作为一种行之有效的方法具有能将太阳能转化为化学能的特性,已经受到了广泛的关注,在有机污染物的降解,水分解和有机合成领域普遍应用。本文研究的是光催化剂在有机合成领域中的应用,因Bi2WO6和Bi4Ti3O12有着较高的光催化活性和稳定性,从而被选为研究对象。通过使用Bi2WO6和Bi4Ti3O12两种半导体,由水热法,超声波法和NaBH4还原法制备了一系列不同类型的Bi2WO6,不同含量的Bi4Ti3O12/Bi2WO6和Au/Bi4Ti3O12催化剂,并通过粉末X射线衍射（XRD）等表征方法对催化剂的形貌、结构和价态进行表征,由SEM表征结果可以发现:性能良好的Bi2WO6（硝酸法,pH=4-5,130℃）是由窄的纳米片组装而成的花状微球结构,60%Bi4Ti3O12/Bi2WO6排列均匀有层次,4%Au/Bi4Ti3O12具有由纳米片填充而成的分层球状结构,将这三种催化剂通过UV-vis DRS和PL表征可以发现其在可见光区域均有吸收且均能有效的抑制光生电荷和空穴的重组,从而证明了催化剂的优异性能。进而将Bi2WO6、Bi4Ti3O12/Bi2WO6和Au/Bi4Ti3O12分别应用于α-烷基化和胺化反应中,数据显示:由硝酸法制备,pH=4-5,130℃时的Bi2WO6,两相复合比例为60%时的Bi4Ti3O12/Bi2WO6和Au的负载量为4%时的Au/Bi4Ti3O12催化剂活性最高。通过对多种变量的优化使得效果达到最佳,并且在保证最优条件下深入研究了醇类,酮类与胺类衍生物对反应的影响,也探究了其他可能对反应造成影响的因素,例如:波长和光强,最终对催化剂进行了循环能力和活性物种的测试。
Abstract
chang ji yi lai ,huan jing wu ran wen ti he neng yuan wei ji wen ti shi yi zhi ying xiang ren lei sheng cun de liang da wen ti ,ke xue jia yan jiu le hu duo fang fa lai jie jue zhe liang da nan ti ,ji zhong ban dao ti guang cui hua zuo wei yi chong hang zhi you xiao de fang fa ju you neng jiang tai yang neng zhuai hua wei hua xue neng de te xing ,yi jing shou dao le an fan de guan zhu ,zai you ji wu ran wu de jiang jie ,shui fen jie he you ji ge cheng ling yu pu bian ying yong 。ben wen yan jiu de shi guang cui hua ji zai you ji ge cheng ling yu zhong de ying yong ,yin Bi2WO6he Bi4Ti3O12you zhao jiao gao de guang cui hua huo xing he wen ding xing ,cong er bei shua wei yan jiu dui xiang 。tong guo shi yong Bi2WO6he Bi4Ti3O12liang chong ban dao ti ,you shui re fa ,chao sheng bo fa he NaBH4hai yuan fa zhi bei le yi ji lie bu tong lei xing de Bi2WO6,bu tong han liang de Bi4Ti3O12/Bi2WO6he Au/Bi4Ti3O12cui hua ji ,bing tong guo fen mo Xshe xian yan she （XRD）deng biao zheng fang fa dui cui hua ji de xing mao 、jie gou he jia tai jin hang biao zheng ,you SEMbiao zheng jie guo ke yi fa xian :xing neng liang hao de Bi2WO6（xiao suan fa ,pH=4-5,130℃）shi you zhai de na mi pian zu zhuang er cheng de hua zhuang wei qiu jie gou ,60%Bi4Ti3O12/Bi2WO6pai lie jun yun you ceng ci ,4%Au/Bi4Ti3O12ju you you na mi pian tian chong er cheng de fen ceng qiu zhuang jie gou ,jiang zhe san chong cui hua ji tong guo UV-vis DRShe PLbiao zheng ke yi fa xian ji zai ke jian guang ou yu jun you xi shou ju jun neng you xiao de yi zhi guang sheng dian he he kong xue de chong zu ,cong er zheng ming le cui hua ji de you yi xing neng 。jin er jiang Bi2WO6、Bi4Ti3O12/Bi2WO6he Au/Bi4Ti3O12fen bie ying yong yu α-wan ji hua he an hua fan ying zhong ,shu ju xian shi :you xiao suan fa zhi bei ,pH=4-5,130℃shi de Bi2WO6,liang xiang fu ge bi li wei 60%shi de Bi4Ti3O12/Bi2WO6he Aude fu zai liang wei 4%shi de Au/Bi4Ti3O12cui hua ji huo xing zui gao 。tong guo dui duo chong bian liang de you hua shi de xiao guo da dao zui jia ,bing ju zai bao zheng zui you tiao jian xia shen ru yan jiu le chun lei ,tong lei yu an lei yan sheng wu dui fan ying de ying xiang ,ye tan jiu le ji ta ke neng dui fan ying zao cheng ying xiang de yin su ,li ru :bo chang he guang jiang ,zui zhong dui cui hua ji jin hang le xun huan neng li he huo xing wu chong de ce shi 。
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论文作者分别是来自内蒙古大学的刘晓玲，发表于刊物内蒙古大学2019-08-13论文，是一篇关于烷基化反应论文,胺化反应论文,内蒙古大学2019-08-13论文的文章。本文可供学术参考使用，各位学者可以免费参考阅读下载，文章观点不代表本站观点，资料来自内蒙古大学2019-08-13论文网站，若本站收录的文献无意侵犯了您的著作版权，请联系我们删除。
标签：烷基化反应论文; 胺化反应论文; 内蒙古大学2019-08-13论文;