搜索结果: 1-13 共查到“石油与天然气工程 USY”相关记录13条 . 查询时间(0.066 秒)
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...
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...
本文采用27AlMASNMR、BET、XRD Rietveld结构精修、IR等表征技术，通过清除和交换引入非骨架铝，研究了Y沸石中非骨架铝的形态。由27Al MAS NMR，得到0ppm非骨架铝以游离在超笼中的非骨架铝为主，30～50ppm的非骨架铝可能黏附于沸石骨架。XRD Rietveld结构精修结果表明晶体学可识别的离子态非骨架铝存在于方钠石笼的SI'和SII'位置，SI'位置的非骨架铝与沸...
SELECTIVE HYDRODESULPHURIZATION OF FULL RANGE FCC GASOLINE ON PtPd/USY-ZEOLITE
FCC gasoline selective desulphurization PtPd/USY-zeolite olefin saturation
2004/10/28
FCC gasoline is generally responsible for more than 90% of the sulphur compounds in the engine gasoline, its desulphurization is thus required to produce ultra low sulphur gasoline (sulphur content <1...