Thermally effected structural and surface transformations of sulfated TiO2, ZrO2 and TiO2-ZrO2 catalysts

被引：0
作者：
Lonyi, F
Valyon, J
机构：
来源：
JOURNAL OF THERMAL ANALYSIS | 1996年 / 46卷 / 01期
关键词：
catalysts; TiO2-ZrO2; systems;
D O I：
暂无
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
Preparations were characterized by specific surface area, thermogravimetry, and X-ray diffractometry. Thermal effects observed were (a) sulfur loss, (b) sintering, (c) crystallization and transformation of the crystalline phase(s). Thermoanalytical curves indicate that decomposition of the sulfate occurs in two distinct steps. Decrease of surface area due to (b) and (c) is concomitant to decomposition of sulfate. Sulfate was found to hinder sintering, crystallization and phase transformations of ZrO2 and TiO2. In low-titania and -zirconia sulfated TiO2-ZrO2 the minor component enhances the effect of sulfate. In equimolar TiO2-ZrO2 sulfate decomposition is accompanied by rapid formation of crystalline TiZrO4.
引用
收藏
页码：211 / 218
页数：8
相关论文
共 50 条
[31]   Promotional effects of Er incorporation in CeO2(ZrO2)/TiO2 for selective catalytic reduction of NO by NH3 [J].
Jin, Qijie ;
Shen, Yuesong ;
Zhu, Shemin ;
Li, Xihong ;
Hu, Min .
CHINESE JOURNAL OF CATALYSIS, 2016, 37 (09) :1521-1529
[32]   Influence of TiO2 and ZrO2 Nanoparticles on Adhesive Bond Strength and Viscosity of Dentin Polymer: A Physical and Chemical Evaluation [J].
Al-Saleh, Samar ;
Alateeq, Abdullah ;
Alshaya, Abdulaziz H. ;
Al-Qahtani, Amal S. ;
Tulbah, Huda, I ;
Binhasan, Mashael ;
Shabib, Sara ;
Farooq, Imran ;
Vohra, Fahim ;
Abduljabbar, Tariq .
POLYMERS, 2021, 13 (21)
[33]   Effect of ZrO2 on steam reforming of methanol over CuO/ZnO/ZrO2/Al2O3 catalysts [J].
Chang, Cheng-Chun ;
Wang, Jhih-Wei ;
Chang, Ching-Tu ;
Liaw, Biing-Jye ;
Chen, Yin-Zu .
CHEMICAL ENGINEERING JOURNAL, 2012, 192 :350-356
[34]   Direct synthesis of mesoporous silicalite-1 supported TiO2-ZrO2 for the dehydrogenation of EB to styrene with CO2 [J].
Jiang, Nanzhe ;
Han, Dae-Soo ;
Park, Sang-Eon .
CATALYSIS TODAY, 2009, 141 (3-4) :344-348
[35]   Should W Surface Density of WOx-ZrO2 Catalysts Be Calculated With Respect To the Specific Surface Area of the Sample or That of ZrO2 Only? [J].
Thomas, Cyril .
JOURNAL OF PHYSICAL CHEMISTRY C, 2011, 115 (05) :2253-2256
[36]   Influence of the crystalline structure of ZrO2 on the metallic properties of Pt in Pt/WO3–ZrO2 catalysts [J].
J.C. Yori ;
J.M. Parera .
Catalysis Letters, 2000, 65 :205-208
[37]   Role of ZrO2 in Cu/ZnO/ZrO2 catalysts prepared from the precipitated Cu/Zn/Zr precursors [J].
Jeong, Cheonwoo ;
Suh, Young-Woong .
CATALYSIS TODAY, 2016, 265 :254-263
[38]   Hydrogen Production by Methanol Steam Reforming Over Pd/ZrO2-TiO2 Catalysts [J].
Perez-Hernandez, R. ;
Avendano, A. D. ;
Rubio, E. ;
Rodriguez-Lugo, V. .
TOPICS IN CATALYSIS, 2011, 54 (8-9) :572-578
[39]   Influence of Polymorphic ZrO2 Phases and the Silver Electronic State on the Activity of Ag/ZrO2 Catalysts in the Hydrogenation of CO2 to Methanol [J].
Grabowski, R. ;
Sloczynski, J. ;
Sliwa, M. ;
Mucha, D. ;
Socha, R. P. ;
Lachowska, M. ;
Skrzypek, J. .
ACS CATALYSIS, 2011, 1 (04) :266-278
[40]   CO2 Hydrogenation to Methanol over ZrO2-Containing Catalysts: Insights into ZrO2 Induced Synergy [J].
Li, Kongzhai ;
Chen, Jingguang G. .
ACS CATALYSIS, 2019, 9 (09) :7840-7861
12345