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以环己胺为模板剂,在水热体系中合成了ZSM-35分子筛沸石。通过使用不同的碱用量、不同的模板剂用量以及不同的铝源对合成ZSM-35分子筛进行可行性研究。用X射线衍射(XR... 以环己胺为模板剂,在水热体系中合成了ZSM-35分子筛沸石。通过使用不同的碱用量、不同的模板剂用量以及不同的铝源对合成ZSM-35分子筛进行可行性研究。用X 射线衍射(XRD)检测生成物分子的物象结晶度,通过对比ZSM-35分子筛的标准XRD图谱推测出相关的合成条件。用不同的酸处理方法对高硅ZSM-35分子筛进行脱铝改性,使分子筛的孔结构以及酸性发生改变。然后以浸渍法将钒氧化物负载到高硅ZSM-35分子筛上制成催化剂。用微型催化反应装置,结合UV-Vis紫外可见、H2-化学吸附和程序升温还原等物理化学手段研究了载体结构以及钒负载量对负载型V2O5/ZSM-35分子筛上丙烷脱氢反应性能的影响. 结果表明,负载型V2O5/ZSM-35催化剂对丙烷脱氢的催化性能与载体组成密切相关.其中钒氧化物的负载量为8%时显示出良好的丙烷转化率和较高的丙烯收率。
各位大哥大姐帮个忙啊,不胜感谢!
在线等!急急急急!请尽量用专业性词汇,例如:环己胺(cyclohexylamine)、水热体系(Hydrothermal system)!谢谢啦~
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2009-06-18
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To cyclohexylamine as a template agent in the hydrothermal system synthesized zeolite ZSM-35 molecular sieve. Base through the use of different dosage, dosage of different templates and different sources on the synthesis of Al-ZSM-35 molecular sieve to conduct a feasibility study. X-ray diffraction (XRD) of the object detection product molecular crystallinity, ZSM-35 by comparing the standard XRD pattern of molecular sieve that the synthesis of the relevant conditions. Use different methods of acid treatment on high-silica zeolite ZSM-35 modified to carry out from aluminum so that the zeolite pore structure and acidity change. Impregnation method and then load to high vanadium oxide silicon ZSM-35 zeolite catalyst made.
Catalytic reaction using a micro-device, combined with UV-Vis UV-Vis, H2-chemical adsorption and TPR study and other means of physical and chemical structure of the carrier, as well as vanadium loading of Zeolite Supported V2O5/ZSM-35 properties of propane dehydrogenation affected. The results show that the supported catalyst for propane dehydrogenation V2O5/ZSM-35 the catalytic performance is closely related to the composition and carrier. One of the vanadium oxide loading to 8% showed a good conversion rate of propane and higher propylene yield.
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Regard own amine of ring as pharmaceutical of template, has formated ZSM-35 molecule and sifted the zeolite in hot system of water. Sift feasibility research in formating ZSM-35 molecule by using different alkali consumption, different template pharmaceutical consumption and different aluminium sources. Measure the degree of crystallinity of object of the product molecule by X ray diffraction (XRD), infer out relevant synthetic terms through comparing with standard XRD atlas that ZSM-35 molecule sifts. Sift and take off aluminium to modify to high silicon ZSM-35 molecule by different acid treatment methods, hole structure of making the molecule sift and changing acidly. Then make into the catalyst on going to high silicon ZSM-35 molecule to sift the oxide load of vanadium with infusion law. Use the miniature catalysis promoter device, combining UV-Vis purple can be seen outside, H2- chemistry absorb and procedure intensify physical chemistry of reducing etc. means study carrier structure and propane take off hydrogen instead at vanadium load amount V2O5/ZSM-35 molecule sift to load type Influence in conformity with performance. The result indicates, load type V2O5/ZSM-35 catalyst takes off catalysis performance and carrier of the hydrogen to make up and is closely related with to propane. Among them the load amount of the vanadium oxide is demonstrating the good propane conversion ratio and higher propylene yield at 8% o'clock.
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2009-06-18
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Take the cyclohexylamine as the template medicinal preparation, synthesized the ZSM-35 molecular sieve zeolite in the water hot system. Through the use different alkali amount used, the different template medicinal preparation amount used as well as the different aluminum source to synthesizes the ZSM-35 molecular sieve to conduct the feasibility study. Diffracts the (XRD) examination resultant member with the X-ray the physical image crystallinity, through contrasts ZSM-35 molecular sieve's standard XRD atlas to extrapolate the related synthesis condition. Carries on with the different acid treatment method to the high silicon ZSM-35 molecular sieve escapes the aluminum modification, causes molecular sieve's hole structure as well as the acidity has the change. Then makes by the impregnation method the vanadium oxide compound load to the high silicon ZSM-35 molecular sieve on the catalyst. With the miniature catalytic reaction installment, unified UV-Vis ultraviolet obviously, H2- physical chemistry methods and so on chemical adsorption and temperature program return to original state has studied the carrier structure as well as the vanadium capacity to the load V2O5/ZSM-35 molecular sieve on the propane dehydrogenation reactivity worth influence. The result indicated that load V2O5/ZSM-35 catalyst to propane dehydrogenation catalyzed performance and carrier composition close related. And the vanadium oxide compound's capacity is time 8% demonstrates the good propane conversion rate and high propylene receiving rate.
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