搜索结果: 1-12 共查到“知识库 Au/TiO2”相关记录12条 . 查询时间(0.109 秒)
采用沉积沉淀法制备出Au/TiO2-SiO2催化剂,使用X射线衍射(XRD)和透射电子显微镜(TEM)对其进行表征,进一步考察N-羟基邻苯二甲酰亚胺(NHPI)和Au/TiO2-SiO2作为催化剂对环己烷氧化性能的影响。结果表明,NHPI与Au/TiO2-SiO2质量比为1∶1,在150℃,氧气压力1.5 MPa下反应3 h,环己烷的转化率高到38.0%,酮醇选择性为79.4%。
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以溶胶-凝胶法制得的TiO2和La2O3-TiO2为载体,采用沉积-沉淀法制备了一系列Au催化剂,用于肉桂醛选择性加氢反应,并运用N2 吸附-脱附、X射线衍射、高分辨率透射电镜、程序升温还原和X射线光电子能谱等方法对催化剂进行了表征,系统考察了La2O3含量对Au/TiO2催化剂物化性质和催化性能的影响.结果表明,适La2O3助剂(10%~15%)的掺杂可显著提高Au/TiO2催化剂的加氢活性和肉...
La2O3助剂对Au/TiO2催化氧化CO性能的影响
Au/La2O3-TiO2 CO 催化氧化 TPD FT-IR
2010/1/11
采用溶胶-凝胶法制备了TiO2以及La2O3-TiO2载体, 再用沉积沉淀法制备Au/TiO2和Au/La2O3-TiO2催化剂, 并对催化剂的CO氧化反应活性进行测试. 结果表明, La2O3助剂可以显著提高催化剂催化氧化CO的活性. X射线衍射(XRD)、程序升温脱附(TPD)、N2吸附-脱附(BET)表征结果表明, La2O3助剂不仅提高了催化剂比表面积, 抑制了TiO2晶粒尺寸的长大, 并...
采用沉积-沉淀法制备了纳米Au/TiO2催化剂, 以X射线衍射(XRD)、透射电子显微镜(TEM)、X射线光电子能谱(XPS)等手段对催化剂进行了系统的表征, 并考察了该催化剂在巴豆醛液相加氢制巴豆醇反应中的催化性能. 通过改变活化气氛、负载量和还原温度, 能够调节Au粒子的尺寸及金属与载体间的相互作用. 在673 K还原条件下制备Au质量分数为9.2%的Au/TiO2 催化剂上, Au粒子的平均...
甲醇水蒸汽重整制氢Au/TiO2催化剂
制氢 甲醇水蒸汽重整 Au/TiO2负载型催化剂
2009/11/11
采用沉积-沉淀法制备了一系列Au/TiO2催化剂,考察了Au负载量、焙烧温度以及助剂等因素对甲醇水蒸汽重整制氢反应催化性能的影响;并利用XRD, TEM对催化剂进行了表征. 结果表明,制备条件对催化性能有明显影响;Au负载量为5%(w)时所得催化剂活性较好;助剂NiO可使催化剂催化甲醇水重整的催化活性明显提高;100℃烘干未焙烧制得的催化剂活性最好;TEM结果显示,NiO的加入使载体TiO2颗粒分...
Photocatalytic Methanol Reforming on Au/TiO2 for Hydrogen Production
Photocatalytic Reforming Au/TiO2
2009/7/28
Methanol can be reformed with water, at ambient
temperature, using photocatalysis, and this reaction
represents a possible low energy, more sustainable
pathway to hydrogen production than (for inst...
Preparation of a Monolith-Supported Au/TiO2 Catalyst Active for CO Oxidation
cordierite monolith gold on titania CO oxidation
2009/7/28
The development of a method for making an
adherent coating of Au/TiO2 on a cordierite monolith
is described. The optimum method entails first
forming a wash-coat of TiO2 by combining a colloidal
d...
A Novel Internally Heated Au/TiO2 Carbon-Carbon Composite Structured Reactor for Low- mperature CO Oxidation
Au/TiO2 Carbon-Carbon
2009/7/28
A compact, internally heated, catalytic reactor is
demonstrated for the low-temperature oxidation of
carbon monoxide. Carbon nanofibres were grown
on carbon felt and used as a support material for
...
Properties of TiO2 Support and the Performance of Au/TiO2 Catalyst for CO Oxidation Reaction
gold titanium dioxide carbon monoxide oxidation
2009/7/28
Gold catalysts were prepared on TiO2 supports of
different phase structures (i.e., anatase, rutile and
biphasic), TiO2 crystal size (i.e., 9-23 nm), surface
and textural properties (i.e., hydration...
An unconventional Au/TiO2 PROX system for complete removal of CO from non-reformate hydrogen
Au/TiO2 PROX system CO non-reformate hydrogen
2009/7/28
Au-based catalysts, generally known for high activity
in the selective catalytic oxidation of CO to CO2 at
ambient temperatures, can play a significant role in
increasing the fuel cell system’s CO ...
采用沉积W22;沉淀法制备Au/TiO2催化剂,并用IR、TG-DTA、XRD、TEM、BET、FL、XPS、UV-vis DRS和PL等分析方法对其进行表征;测试和计算在甲醇的光催化消除反应中Au/TiO2催化剂的动力学参数;以低级醇类消除反应为模式反应评价催化剂在紫外光照下的光催化性能。结果表明:Au质量分数为1%的Au/TiO2催化剂在200 ℃下活化4 h的光催化活性最佳,0.15 ...