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7篇 您的检索式:作者名="Rodolfo Zanella"
    题名 作者 年代 出处 被引量
1Structure-activity relationship in water-gas shift reaction over gold catalysts supported on Y-doped ceria显示文摘The utilization of pure hydrogen as an energy source in fuel cells gave rise to renewed interest in developing active and stable water-gas shift catalysts. Gold catalysts have proven to be very efficient for water-gas shift reaction at low temperature. The aim of the present study was to investigate the effect of:(i) different preparation methods(impregnation and coprecipitation) to obtain a modified ceria support,and(ii) the amount of Y_2 O_3(1.0 wt%, 2.5 wt%, 5.0 wt% and 7.5 wt%) as dopant on the water-gas shift activity of Au/CeO_2 catalysts. An extended characterization by means of S_(BET), XRD, HRTEM/HAADF, FTIR,H_2-TPR and CO-TPR measurements in combination with careful evaluation of the catalyst behavior allowed to shed light on the parameters governing the water-gas shift activity. The catalysts show very high activity(>90% CO conversion) in the temperature range 180-220 ℃,with a slightly better performance of the gold catalysts on supports prepared by impregnation. The decreased activity with increasing Y_2 O_3 concentration is related to the hindering of oxygen mobility due to ordering of surface oxygen vacancies in vicinity of segregated Y^(3+). The effect of catalyst pre-treatments and the stability of the best performing samples were examined as well.Tatyana Tabakova Lyuba Ilieva Ivan Ivanov Maela Manzoli Rodolfo Zanella Petya Petrova Zbigniew Kaszkur 2019Journal of Rare Earths2019,37,4:4
2Characterization and reactivity in CO oxidation of gold nanoparticles supported on TiO2 prepared by deposition-precipitation with NaOH and urea 显示文摘Rodolfo Zanella Suzanne Giorgio Chae-Ho Shinc Claude R Henry Catherine Louis 2004Journal of Catalysis2004,222,2:1
3Au/rutile catalysts: effect of the activation atmosphere on the gold-support interaction 显示文摘Xim Bokhimi Rodolfo Zanella Antonio Morales Viridiana Maturano Carlos angeles-Chhvez 2011Journal of Chemical Physics C2011,115,13:1
4Au/Y-TiO2 catalyst: high activity and long-term stability in CO oxidation 显示文摘Rodolfo Zanella Vicente Rodriguez-Gonzfilez Yamin Arzola Albino Moreno-Rodriguez 2012A CS Catalysis2012,2,1:1
5Au-Ir催化剂用于生物质衍生物加氢(英文)显示文摘采用沉积-沉淀法制备了TiO_2负载的Au-Ir和Au-Ru催化剂,用于乙酰丙酸加氢制γ-戊内酯反应,并与相应的单金属催化剂性能进行了比较.有趣的是,Ir/TiO_2中添加Au抑制了催化剂活性,而添加Ru则表现出正效应的协同作用.这两个催化剂均在H_2中还原,使得M^0–Au^0间相互作用增强.结合以前的密度泛函理论计算和催化反应结果,我们认为,Au-Ir/TiO_2催化剂活性低于Ir/TiO_2催化剂是由于Au影响了Ir原子的氧化还原过程.Lorenzo Landenna Alberto Villa Rodolfo Zanella Claudio Evangelisti Laura Prati 2016Chinese Journal of Catalysis2016,37,10:1
6Au/Y-Ti O2catalyst:high activity and long-term stability in CO oxidation显示文摘Rodolfo Zanella Vicente Rodríguez-González Yamin Arzola Albino Moreno-Rodriguez 2012ACS Catalysis2012,2,1:1
7Uric Acid as a Factor in the Metabolic Syndrome显示文摘Rodolfo Le?o Borges Artur Beltrame Ribeiro Maria Teresa Zanella Marcelo Costa Batista 2010Current Hypertension Reports2010,,2:1
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