搜索结果: 1-11 共查到“工学 ZrO2-Al2O3”相关记录11条 . 查询时间(0.094 秒)
过微乳液法负载Pt制备了Pt-S2O82-/ZrO2-Al2O3(Pt-SZA-X) 催化剂,并采用XRD、BET、FT-IR、TPR、TEM等手段对催化剂进行了表征。以正戊烷异构化反应为探针,考察了焙烧温度对催化剂异构化性能的影响。结果表明,焙烧温度对Pt-SZA-X的还原温度影响不大,但催化剂表面S含量随着焙烧温度的升高而下降;焙烧温度为600~650℃时形成O=S=O结构,此时S与催化剂载体...
(CeO2-ZrO2-Al2O3)-(La2O3-Al2O3) 复合氧化物负载的 Pd 密偶催化剂: 载体焙烧温度的影响（图）
钯 密偶催化剂 同时共沉淀 丙烷 热稳定性 汽车尾气净化 焙烧温度
2013/10/7
采用同时共沉淀法制备了 (CeO2-ZrO2-Al2O3)-(La2O3-Al2O3) 新型复合氧化物 (CZA-LA), 考察了焙烧温度对 CZA-LA 负载的 Pd 密偶催化剂的影响, 并采用 N2 吸附-脱附法和 X 射线衍射对其进行了表征. 结果表明, 随着焙烧温度的升高, 尽管 CZA-LA 样品的比表面积降低, 但即使在 1000 °C 焙烧 5 h 后, 其比表面积仍能保持在 122...
采用共沉淀法制备了未改性的和 Ca 掺杂的 CeO2-ZrO2-Al2O3 样品,进一步用浸渍法制备了Pd/CeO2-ZrO2-Al2O3 (Pd/CZA) 和 Pd/ CeO2-ZrO2-Al2O3-CaO(Pd/CZACa)催化剂.运用X射线衍射、N2 吸附-脱附、储氧量测定、CO化学吸附、NH3程序升温脱附、CO2程序升温脱附、H2程序升温还原和X射线光电子能谱对催化剂进行了表征,并考察了其...
在表面活性剂P123作用下,通过无机盐的双水解反应制备了介孔ZrO2-Al2O3复合氧化物.研究发现,所得样品具有较大的比表面积和可调变的孔结构.ZrO2可嵌入到Al2O3 骨架中形成固溶体, 因而热稳定性增加;与Al2O3相比,适量ZrO2加入使ZrO2-Al2O3的酸密度和酸强度增加.在 CH4/CO2 干气重整反应中,Ni/ZrO2-Al2O3催化剂活性略低于Ni/Al2O3,但表现出优良的...
Oxidative Cracking of Aromatic Compounds Related to Lignin Constituents with Steam Using ZrO2–Al2O3–FeOx Catalyst
Iron oxide catalyst Biomass Lignin-constituent aromatic Phenol Oxidative cracking
2010/9/8
The catalytic activity of iron oxide composite catalyst (ZrO2–Al2O3–FeOx) was investigated for converting aromatic compounds derived from plant biomass into useful aromatics. Catalytic cracking of lig...
等轴晶ZrO2(Al2O3, Fe2O3)复相陶瓷的制备
喷雾干燥 ZrO2 复相陶瓷
2009/11/12
讨论了以硝酸盐溶液为原料，经喷雾干燥、热解、成型、烧结或直接烧结制备等轴晶ZrO2(Al2O3, Fe2O3)复相陶瓷的过程. 研究了成型压力、烧结温度、恒温时间及Al3+, Fe3+的加入对ZrO2陶瓷的相组成、晶粒大小和形貌的影响. 结果表明：成型压力对相组成及晶粒尺寸无明显影响；无论是直接采用硝酸盐复合粉末还是采用氧化物粉末压坯作为前驱物，烧结产物的形貌、相组成不变；加入Fe2O3可克服微观...
Development of Pt/WO3-ZrO2-Al2O3 Catalyst for Isomerization of Normal Heptane (Part 1) Control of Catalyst Acidity to Improve Isomerization Selectivity
Isomerization Normal heptane Solid super acid Research octane number
2009/7/28
The skeletal isomerization of paraffins is effective in improving the gasoline octane number, and platinum catalyst supported on sulfated zirconia (SZ) has been practically used for light naphtha iso...
Isomerization of Light Naphtha over Sulfur Tolerant Pd/SO42W22;/ZrO2-Al2O3 Catalyst
Sulfated zirconia catalyst Palladium catalyst Light naphtha
2009/7/24
Isomerization of organic sulfur containing light naphtha was studied over metal sulfated zirconium catalyst. Even in the presence of sulfur compounds, Pd/SO42W22;/Zr02-Al2O3 catalyst indicated th...
Pd-impregnated Pt/SO42W22;/ZrO2-Al2O3 Catalysts for Isomerization of Straight Light Naphtha
Sulfated zirconia alumina catalyst Platinum catalyst Palladium catalyst
2009/7/24
Isomerization of light naphtha containing sulfur compounds was investigated over metal/SO42W22;/ZrO2-Al2O3 catalysts, and the appearance of sulfur tolerance was discussed using the analysis of the...
Pt/ZrO2- Al2O3 催化剂芳构化反应性能研究
催化重整 芳构化 催化剂
2008/12/17
在微型反应装置上考察以ZrO2和γ-Al2O3为载体负载Pt的单金属催化剂和多金属催化剂的反应活性、选择性、稳定性. 实验结果表明，以ZrO2和γ-Al2O3为载体负载Pt的单金属催化剂ZAP具有非常好的正庚烷转化活性和甲苯选择性，而裂化性能较弱，反应初期正庚烷转化率为87.5%，甲苯收率达到33.0%，C3+C4收率在10.5%左右，但积炭速率较快，催化剂的稳定性略差；ZrO2和γ-Al2O3复...