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of the Ministry of Education, Sichuan University摘 要:Ce-Zr-Al-Nd2O3 (CZAN) support materials were prepared by co-precipitation and impregnation methods, respectively..., the CZAN-i support prepared by impregnation method had better thermal stability and redox prop-erty. Meanwhile, the Pd/CZAN-i catalyst exhibited the best catalytic performance. XPS measurements indicated......
exhibited a higher catalytic performance and better thermal stability than the Pd/CeO2 prepared by conventional impregnation. The flower-like Pd/CeO2 catalysts were constructed from 20-50 nm thick... catalysts prepared by the UAMR-hydrothermal method exhibited better performance than the corresponding samples prepared by conventional impregnation means.关键词:......
of La3+ and Ba2+ modified NaY zeolites were synthesized through different impregnation procedures. Lactic acid dehydration to acrylic acid was selected as a probe reaction to test the catalytic... and CO2-TPD. The characterization results demonstrated that the samples synthesized by two-step impregnation had more medium acid and base sites inducing better catalytic performance. Moreover, compared......
of the Ministry of Education, Sichuan University摘 要:Ce-Zr-Al-Nd2O3 (CZAN) support materials were prepared by co-precipitation and impregnation methods, respectively..., the CZAN-i support prepared by impregnation method had better thermal stability and redox prop-erty. Meanwhile, the Pd/CZAN-i catalyst exhibited the best catalytic performance. XPS measurements indicated......
exhibited a higher catalytic performance and better thermal stability than the Pd/CeO2 prepared by conventional impregnation. The flower-like Pd/CeO2 catalysts were constructed from 20-50 nm thick... catalysts prepared by the UAMR-hydrothermal method exhibited better performance than the corresponding samples prepared by conventional impregnation means.关键词:......
deposition, CVI)和浸渍炭化(Impregnation and carbonization, I/C)制备不同密度和基体炭的C/C坯体；通过添加Ti元素改善熔融Cu与C/C坯体的润湿性.采用真空熔渗法制备C/C-Cu复合材料.对复合材料的力学性能及其与坯体之间的关系进行研究,并与常用滑板材料的力学性能进行比较.结果表明:随着坯体密度的增加,复合材料的抗弯强度下降,而坯体密度为1.4... with different densities and matrix carbon types, which were prepared by chemical vapor deposition(CVI) or resin impregnation and carbonization (I/C). The mechanical properties of the composites......
Effects of CeO2 on structure and properties of Ni-Mn-K/bauxite catalysts for water-gas shift reaction江莉龙,叶炳火,魏可镁摘 要:Multiple-metal catalysts (Ni-Mn-Ce-K/bauxite) for Water-Gas Shift (WGS) reaction were prepared by impregnation, and the catalytic structure and properties were investigated by N2 physical, XRD, H2-TPR, and CO-TPD. The results indicated......
Palladium catalysts supported on novel CexY1–xO washcoats for toluene catalytic combustion金凌云,何迈,鲁继青,罗孟飞,高立表,何军摘 要:Novel CexY1–xO washcoats adhered on the cordierite honeycomb, used as supports for Pd catalysts, were prepared by an impregnation method. It was found that the CexY1–xO washcoats had better adhesion and higher adsorption efficiency......
Modification of nickel supported over ZnO for HDS of thiophene with neodymium石秋杰,李治俊,李彬,胡雪娟摘 要:Ni/ZnO and Ni-Nd/ZnO were prepared by impregnation method,and the catalytic activities of Ni/ZnO and Ni-Nd/ZnO for hydrodesulfurization(HDS) of thiophene were tested. The catalysts were characterized by temperature programmed reduction(TPR) ,H2-TPD and NH3-TPD......
NOx-assisted soot oxidation over K/CuCe catalyst翁端,李佳,吴晓东,司知蠢State Key Laboratory of New Ceramics & Fine Process, Department of Materials Science and Engineering, Tsinghua University摘 要:CeO2 and CuOx-CeO2 supported potassium catalysts were synthesized by wetness impregnation method. The catalysts were characterized by BET, NO-TPO, NOx-TPD and soot-TPO......
