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改性Y分子筛加氢裂化催化剂耐氮性能的研究
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作者 刘东香 徐学军 尹泽群 《辽宁化工》 CAS 2003年第10期433-435,共3页
采用水热处理法制备了两种改性Y型分子筛NTY和USY ,并用含吡啶正庚烷和甲苯为模型化合物 ,对引入这两种分子筛制备的加氢裂化催化剂性能进行了考察 ,发现引入表面积大、二次孔多、结晶度高的NTY分子筛制备的加氢裂化催化剂 ,其耐氮性能... 采用水热处理法制备了两种改性Y型分子筛NTY和USY ,并用含吡啶正庚烷和甲苯为模型化合物 ,对引入这两种分子筛制备的加氢裂化催化剂性能进行了考察 ,发现引入表面积大、二次孔多、结晶度高的NTY分子筛制备的加氢裂化催化剂 ,其耐氮性能明显优于USY分子筛制备的催化剂。 展开更多
关键词 改性Y分子筛 加氢裂化催化剂 耐氮性能 水热处理法 原油
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对影响超稳分子筛质量的几个因素的探讨 被引量:3
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作者 刘宪乙 《齐鲁石油化工》 2001年第3期207-210,共4页
主要对超稳分子筛超稳化机理及影响产品质量的各因素进行了分析和探讨 。
关键词 USY 超稳分子筛 质量 水热处理法 制备
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One-step post-synthesis treatment for preparing hydrothermally stable hierarchically porous ZSM-5 被引量:5
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作者 Jian Ding Teng Xue +1 位作者 Haihong Wu Mingyuan He 《Chinese Journal of Catalysis》 SCIE EI CAS CSCD 北大核心 2017年第1期48-57,共10页
Hierarchically porous ZSM‐5 (SiO2/Al2O3 ≈ 120) containing phosphorus was prepared by a one‐step post‐synthesis treatment involving controlled desilication and phosphorous modification. The hierarchically porous ZS... Hierarchically porous ZSM‐5 (SiO2/Al2O3 ≈ 120) containing phosphorus was prepared by a one‐step post‐synthesis treatment involving controlled desilication and phosphorous modification. The hierarchically porous ZSM‐5 featured high thermal and hydrothermal stability. The obtained ZSM‐5zeolites were systematically characterized by X‐ray diffraction, scanning electron microscopy,transmission electron microscopy, N2 adsorption‐desorption, NH3 temperature‐programmed desorption,and 27Al and 31P magic‐angle spinning nuclear magnetic resonance spectroscopy. Theprepared ZSM‐5 displayed enhanced activity and prolonged lifetime toward hydrocarbon cracking.The high activity was attributed to improved coke tolerance owing to the presence of the highlystable mesoporous network of ZSM‐5 and acid sites introduced upon phosphorus modification.Additionally a mechanism of the stabilization of the zeolites by phosphorus was proposed and discussed. 展开更多
关键词 DESILICATION Phosphorus stabilization One‐step modification Hydrothermal stability Hydrocarbon cracking
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Characterization of Thailand Rice Husk Ash from Biomass Power Plant and Synthesized Zeolite
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作者 Chawikarn Santasnachok Winarto Kumiawan Hirofumi Hinode 《Journal of Life Sciences》 2015年第3期127-130,共4页
Thailand rice husk ash was used to synthesize zeolite by hydrothermal treatment. Raw rice husk ash material and zeolitic products were characterized in terms of specific surface area (BET method), morphological anal... Thailand rice husk ash was used to synthesize zeolite by hydrothermal treatment. Raw rice husk ash material and zeolitic products were characterized in terms of specific surface area (BET method), morphological analysis (SEM), mineralogical composition (XRD) and CEC (cation exchange capacity). LOI (Loss of ignition) of rice husk ash was also evaluated. Result indicated that the rice husk ash sample from Roi-Et Green power plant in the Northeastern of Thailand with combustion temperature of 650 ℃ has a high content of SiO2 (above 90 wt.%). Zeolite-X from rice husk ash with high content of Si was successfully synthesized using hydrothermal treatment. The zeolitic material synthesized with the optimal condition possessed a maximum value of CEC of 503 meq/100g, and it has potentiality to be used as ion exchangers. 展开更多
关键词 ZEOLITE rice husk ash hydrothermal synthesis.
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Synthesis of cell-penetrated nitrogen-doped carbon dots by hydrothermal treatment of eggplant sepals 被引量:3
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作者 Yichen Wang Xiue Jiang 《Science China Chemistry》 SCIE EI CAS CSCD 2016年第7期836-842,共7页
Novel nitrogen doped carbon quantum dots were successfully fabricated by a hydrothermal method wxth eggplam sepals as carbon source. The carbon materials were characterized by transmission electron microscopy (TEM),... Novel nitrogen doped carbon quantum dots were successfully fabricated by a hydrothermal method wxth eggplam sepals as carbon source. The carbon materials were characterized by transmission electron microscopy (TEM), UV-Vis adsorption, Fourier-transformed infrared spectroscopy (FTIR), fluorescence and the X-ray photoelectron spectroscopy (XPS) measurements, respectively. The carbon quantum dots showed excellent photoluminescence property with high stability in phosphate buffer solution with different pH values from 5 to 9, even in the cell culture medium supplied with the fetal bovine serum. Meanwhile, we also studied the interaction of carbon quantum dots with living HeLa cells with confocal microscopy. Our results indicated that the carbon quantum dots can enter the living HeLa cells by cellular penetration. 展开更多
关键词 carbon quantum dots eggplant sepals FLUORESCENCE BIOIMAGING cellular penetration
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