搜索结果: 1-15 共查到“USY”相关记录21条 . 查询时间(0.046 秒)
Cu-MgO/USY催化甘油氢解制丙二醇（图）
甘油氢解 甘油 1,2-丙二醇 1,3-丙二醇
2013/12/5
以USY为载体制备了一系列不同Cu和MgO负载量的酸碱双功能催化剂Cu-MgO/USY用于甘油氢解制丙二醇反应,并采用X射线粉末衍射、透射电镜、傅里叶红外光谱、NH3程序升温脱附等手段对该催化剂进行了表征.结果表明,负载后的USY载体其Y沸石特征峰保持完整, 且MgO的加入提高了Cu在载体表面的分散度.在200℃, 3.5 MPa H2 下反应10 h以及6% 催化剂0.2Cu-MgO/USY (...
汽油催化裂化脱硫USY/ZnO/Al2O3催化剂
汽油 催化裂化 脱硫 USY/ZnO/Al2O3催化剂
2009/12/8
提出了汽油经催化裂化脱硫的技术路线，并对催化剂进行了研究.综合采用浸渍和共 沉淀法制备的USY/ZnO/Al2O3汽油催化裂化脱硫催化剂在固定床反应装置上评价结果表明， 具有优异的脱硫活性和硫化物裂化选择性.脱除的硫绝大多数以H2S的形式进入到裂化气中， 仅有少量沉积在催化剂上，这有利于硫的回收利用和环境保护.硫化物的裂化脱硫是裂化和 氢转移反应协同作用的结果，高温有利于裂化反应,而相对较低的温度...
Hydroisomerization of n-Hexadecane over Pt/Beta and Pt/USY Zeolite Catalysts
Beta zeolite catalyst Hydroisomerization Acidity Hexadecane
2009/8/4
Bifunctional platinum (0.8 wt%) catalysts containing beta and USY zeolites were tested for the hydroisomerization of n-hexadecane. The Pt/Beta(SiO2/Al2O3 = 40) catalyst with moderate acid strength sh...
Effect of Yb Loading on Aromatic Hydrogenation Activity of Pd-Pt/USY Zeolite Catalysts
Palladium platinum catalyst USY zeolite Ytterbium modification
2009/8/4
A series of bimetallic palladium-platinum (molar ratio Pd : Pt=4 : 1) catalysts supported on ytterbium (Yb)-modified ultrastable Y (USY) zeolite, Pd-Pt/Yb-USY, were prepared and characterized to inve...
Effect of Extraframework Aluminum of USY Zeolite on Sulfur Tolerance of Pd-Pt/USY Catalyst
Extraframework aluminum Delaminated USY zeolite Palladium platinum catalyst
2009/8/4
A series of bimetallic Pd-Pt (mole ratio Pd:Pt=4:1) catalysts supported on ultrastable Y (USY) zeolites and delaminated USY zeolites were prepared and characterized by XRD, 27Al MAS NMR and CO adsorp...
Effect of SiO2/Al2O3 Ratio and Crystalline Structure of Zeolite on Hydrogenation and Hydrodesulfurization over Pt-Pd Catalyst Supported on USY Zeolite
Palladium platinum catalyst USY zeolite Desulfurization Hydrogenation
2009/7/27
Effects of the carrier characteristics were studied on the catalytic properties of Pt-Pd-supported USY zeolites in the hydrogenation of tetralin and the hydrodesulfurization of 4,6-dimethyldibenzothio...
Titanium Modified USY Zeolite-based Catalysts for Hydrocracking Residual Oil (Part 3) Preparation and Activity Test of Catalysts Based on Realuminated USY
Hydrocracking Realuminated USY zeolite Titanium modification
2009/7/24
A high Si/Al ratio USY zeolite with high mesoporosity was used as the starting material for hydrocracking catalysts for residual oil to improve the catalytic selectivity for middle distillate fractio...
Titanium Modified USY Zeolite-based Catalysts for Hydrocracking of Residual Oil (Part 2) Development of Catalysts for Fixed Bed Reactors
Hydrocracking Titanium modification USY zeolite Residual oil Mesopore
2009/7/24
The present study tried to develop hydrocracking catalysts for commercial hydrotreating plants to treat residual oil based on the molybdenum-supported Ti-modified zeolite (MTZ) described in Part 1 of...
Titanium Modified USY Zeolite-based Catalysts for Hydrocracking Residual Oil（Part1）Preparation and Activity Test of Molybdenum Supported Catalysts
Hydrocracking Titanium modification USY zeolite Residual oil Mesopore
2009/7/23
New USY zeolite-based hydrocracking catalysts were developed to meet the increasing demand for producing clean middle distillates from residual oil. Titanium modified USY zeolite was prepared by trea...
Ultra-deep Hydrodesulfurization and Aromatics Hydrogenation of Diesel Fuel over a Pd-Pt Catalyst Supported on Yttrium-modified USY
Palladium-platinum catalyst USY zeolite Yttrium modification
2009/7/23
Bimetallic palladium-platinum catalyst supported on yttrium-modified ultrastable Y (USY) zeolite, Pd-Pt/Y-USY, showed high activity and stability for deep hydrodesulfurization (HDS) and hydrodearomat...
研究了压力对USY催化剂催化甲苯裂解结焦及其前驱体的影响。采用热重、红外、13C固体核磁、元素分析、色质联用、程序升温氧化法等手段对催化剂上的焦炭和液相产物中的焦炭前驱体进行了考察。结果表明，沉积在催化剂上的焦炭主要为缩合度较高的多环芳烃，随着压力的升高，总的结焦量减少，液相产物中多环芳烃的环数和质量分数呈增加趋势，证明了超临界流体对焦炭前驱体有萃取效果。并探讨了超临界条件下甲苯催化裂解结焦的机理...
提高USY型FCC催化剂硫转移和催化裂化活性的研究
硫转移 氢转移 表层尖晶石 催化裂化
2008/3/10
采用镁、铈、镧和磷对USY型FCC催化剂进行改性，采用FTIR分析方法对改性催化剂的表面酸性进行了表征，研究了硫转移活性组分对催化剂的硫转移和催化裂化活性的影响。结果表明，多次氧化还原循环后，改性催化剂仍保持较好的硫转移活性，可以达到60%以上。镁的引入会减少基质和分子筛表面强酸的数量，少量镁的引入对催化裂化活性影响不大，铈和镧的引入会使分子筛和基质的表面酸量得到显著增加，提高催化裂化活性，但...
采用NH3-TPD、FT-IR、XRD和元素分析方法研究了稀土和磷改性沸石P-RE-USY的酸性、水热稳定性,并在小型固定流化床反应装置中评价了含有这种改性沸石催化剂的反应性能。结果表明,由于磷促进了稀土离子由超笼向方钠石笼中的迁移,阻止了沸石在水热条件下的脱铝作用,从而改善了P-RE-USY沸石的水热稳定性；P-RE-USY沸石酸性分布更集中在中强酸范围,有利于发生氢转移反应,而强酸数量的降低有...