期刊文献+
共找到3篇文章
< 1 >
每页显示 20 50 100
类水滑石CuNiAl的制备、表征及其催化性能的研究 被引量:3
1
作者 杨小丽 李树晓 赵振波 《化工中间体》 2010年第8期25-30,共6页
采用水热法和尿素水解法首次合成了三元类水滑石CuNiAl(Cu+Ni/Al=3,Cu/Ni=5.0,3.0,1.0,0.33),将合成的类水滑石用于苯羟基化反应。采用X射线衍射(XRD)、傅里叶变换红外光谱(FT-IR)、扫描电镜(SEM)和透射电镜(TEM)等手段对类水滑石进行表... 采用水热法和尿素水解法首次合成了三元类水滑石CuNiAl(Cu+Ni/Al=3,Cu/Ni=5.0,3.0,1.0,0.33),将合成的类水滑石用于苯羟基化反应。采用X射线衍射(XRD)、傅里叶变换红外光谱(FT-IR)、扫描电镜(SEM)和透射电镜(TEM)等手段对类水滑石进行表征,以CuNiAl31作为催化剂,考察了反应时间、反应温度、溶剂及溶剂用量、催化剂用量、n(benzene)/n(H_2O_2)对苯羟化反应的影响。结果表明:与CuNiAl11、CuNiAl21、CuNiAl13催化剂相比,CuNiAl31具有较高的反应活性,反应的最佳条件为:反应时间6h、反应温度65℃、15 ml吡啶作为溶剂、10mg催化剂、n(benzene)/n(H_2O_2)=3.0时,苯的转化率为7%,苯酚的选择性几乎为100%。 展开更多
关键词 类水滑石 苯羟基化反应 水热合成 CuNiAl
下载PDF
类水滑石CuMgAl的制备、表征及其催化性能的研究 被引量:2
2
作者 李树晓 郭蕊 赵振波 《应用科技》 CAS 2009年第2期5-8,共4页
针对共沉淀法制备类水滑石难于操作、易混入碱金属离子等缺点,采用水热和尿素水解法制备了三元类水滑石CuMgAl(Cu+Mg/Al=3,Cu/Mg=5.0,3.0,1.0,0.33),并将合成的类水滑石用于苯羟基化反应;采用X射线衍射(XRD)、傅里叶变换红外光谱(FT-IR... 针对共沉淀法制备类水滑石难于操作、易混入碱金属离子等缺点,采用水热和尿素水解法制备了三元类水滑石CuMgAl(Cu+Mg/Al=3,Cu/Mg=5.0,3.0,1.0,0.33),并将合成的类水滑石用于苯羟基化反应;采用X射线衍射(XRD)、傅里叶变换红外光谱(FT-IR)、扫描电镜(SEM)等手段对类水滑石进行表征,以CuMgAl31作为催化剂,考察了反应时间、反应温度、溶剂及用量、催化剂用量、n(benzene)/n(H2O2)对苯羟化反应的影响.结果表明:与CuMgAl11、CuMgAl21、CuMgAl13催化剂相比,CuMgAl31具有较高的反应活性,反应的最佳条件为:反应时间6h、反应温度65℃、15mL吡啶作为溶剂、10mg催化剂、n(benzene)/n(H2O2)=3.0时,苯的转化率为5.5%,苯酚的选择性几乎为100%. 展开更多
关键词 类水滑石 苯羟基化反应 水热合成 CuMgAl
下载PDF
Synthesis of Rare Earth Based Modenite and Study on Its Performance for Catalyzing Phenol Hydroxylation Reaction
3
作者 Chen Xiaodong Qi Xiaolan Zhang Jingchang 《China Petroleum Processing & Petrochemical Technology》 SCIE CAS 2011年第1期45-51,共7页
La or Ce-containing mordenite samples were synthesized from an amine-free fluorine-containing system with a quite broad range of raw materials compositions.When cerous nitrate was used in place of lanthanum nitrate as... La or Ce-containing mordenite samples were synthesized from an amine-free fluorine-containing system with a quite broad range of raw materials compositions.When cerous nitrate was used in place of lanthanum nitrate as the starting material for synthesis of the zeolite,the formation of quartz could be inhibited.Aluminum is the necessary starting material for synthesis of the rare earth-containing modernite,which features good activity for catalyzing phenol hydroxylation reaction with a less tar formation and a higher ratio of ortho-hydroxyphenol/para-hydroxyphenol.The activity of Ce-containing modernite is apparently higher than that of La-containing mordenite.The mordenite sample with high cerium content can give a higher phenol conversion coupled with a 200% increase in hydroquinone selectivity,resulting in an apparent reduction in para-benzoquinone selectivity.The phenol conversion increases in big chunks with an increasing reaction temperature,leading to an obvious reduction in para-benzoquinone selectivity along with an increasing decline ratio of ortho/para-positioned hydroxyphenol products.The appropriate hydroxylation reaction time is in the range of 4-6 hours. 展开更多
关键词 rare earth elements modernite PHENOL HYDROXYLATION DIHYDROXYBENZENE
下载PDF
上一页 1 下一页 到第
使用帮助 返回顶部