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微反活性实验
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  “微反活性实验”译为未确定词的双语例句
     It is found that in the case of catalysts with nearly the same content of active component, the HDN activity has a linear and inverse relation with the amount of NiAl2O4. The results indicate that the more even distribution of W, the higher the Raman scattering frequency, and the more amount of polytungstate on the catalyst, the more helpful to suppress the formation of NiAl2O4, and thus the higher the activity of the catalyst for pyridine HDN reaction.
     微反活性实验表明,无论催化剂制备方式如何,Ni-W/γ-Al_2O_3的吡啶加氢脱氮活性与NiAl_2O_4生成量之间有近似的反比线性关系。
短句来源
     Quinoline catalytic cracking was studied on a fixed-bed microactivity test unit by using toluene, cetane, and tetralin as solvent.
     采用固定床微反活性实验装置,以甲苯、十六烷、四氢萘为溶剂,研究了碱性含氮化合物喹啉的催化裂化转化规律。
短句来源
     Indole catalytic cracking was performed on a fixed-bed microactivity test unit by using toluene,cetane,and tetralin as solvents.
     采用固定床微反活性实验装置,以甲苯、十六烷、四氢萘为溶剂,研究了非碱性含氮化合物吲哚的催化裂化转化规律。
短句来源
  相似匹配句对
     The experimental result are given as follows:
     实验
短句来源
     Laboratory;
     实验;
短句来源
     Microreactor test(MAT) results showed that the catalysts exhibited different activity;
     结果发现,这些催化剂的微反活性出现了差异。
短句来源
     Microreactor FCC activity of Y zeolite with different surface fractal dimension
     不同表面分维数Y型分子筛微反活性的研究
短句来源
     The calculated results from the model are in good accordance with the standard microactivity test results.
     这与标准轻油微反活性评价实验结果相吻合
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Ni-W/γ-Al2O3 catalyst is characterized by its good performance for HDN reaction. In order to explore a HDN catalyst with high activity, combined techniques of XPS, Raman spectroscopy and EMPA were used to study the distribution and chemical states of active components on Ni-W/γ-Al2O3 prepared by different methods. It is found that the time of impregnation is the main factor which influences the distribution of active components, the prolonged impregnation time is helpful to obtain even distribution. It is also...

Ni-W/γ-Al2O3 catalyst is characterized by its good performance for HDN reaction. In order to explore a HDN catalyst with high activity, combined techniques of XPS, Raman spectroscopy and EMPA were used to study the distribution and chemical states of active components on Ni-W/γ-Al2O3 prepared by different methods. It is found that the time of impregnation is the main factor which influences the distribution of active components, the prolonged impregnation time is helpful to obtain even distribution. It is also found that in the case of Ni-W co-impregna- tion, there exists a competitive adsorption between Ni and W on A12O3, which reduces both the penetration rates of Ni and W. Therefore, by adjusting the time and sequence of impregnation, catalysts with different distributions of active components can be prepared.The experimental results show that the formation of spinel NiAl2O4 can be significantly supressed by Ni-W co-impregnation. In addition, the drying rate of the catalyst has an effect on the formation of the spinel, the medium drying rate is the best way to reduce the, amount of NiAl2O4. Raman scattering spectra prove that the major portion of W is polytung-state on catalyst prepared by wet impregnation, and the existence of Ni suppresses the formation of mono-tungstate.The correlation between pyridine HDN activity and the relative amount of NiAl2O4 of the catalyst was studied. It is found that in the case of catalysts with nearly the same content of active component, the HDN activity has a linear and inverse relation with the amount of NiAl2O4. The results indicate that the more even distribution of W, the higher the Raman scattering frequency, and the more amount of polytungstate on the catalyst, the more helpful to suppress the formation of NiAl2O4, and thus the higher the activity of the catalyst for pyridine HDN reaction.

采用电子探针显微分析的EDX和XPS、拉曼光谱等技术研究了不同制备方式对Ni和W在γ-Al_2O_3颗粒上的分布与化学状态的影响。实验表明,浸渍时间是影响组分分布均匀程度的主要因素。Ni和W在γ-Al_2O_3上存在竞争吸附,调节浸渍时间或分浸顺序可以制备出Ni,W分布情况不同的催化剂。单组分Ni浸渍γ-Al_2O_3容易形成表面NiAl_2O_4;Ni和W共浸,NiAl_2O_4的形成受到W的抑制,抑制程度因浸渍方式不同而异。湿浸方式制备的催化剂,W主要以聚钨酸的WO_3形式存在,共存的Ni有抑制单核钨酸WO_3生成的作用。干燥方式不同,对催化剂表面NiAl_2O_4生成量的影响也不相同。微反活性实验表明,无论催化剂制备方式如何,Ni-W/γ-Al_2O_3的吡啶加氢脱氮活性与NiAl_2O_4生成量之间有近似的反比线性关系。

The thick well MCM 41 mesoporous materals were hydrothermally synthesized by novel modification of the gel system used X ray diffraction, nitrogen adsorption, TG DTA, SEM and pyridine temperature programmed desorption(TPD) were used to characterize the synthesized MCM 41 The results showed that all the samples exhibit a typical XRD diffraction of MCM 41 and adsorption isotherm of type Ⅳ The sample had high relative crystallinity, uniform mesopore distribution and high surface areas TG DTA cure...

The thick well MCM 41 mesoporous materals were hydrothermally synthesized by novel modification of the gel system used X ray diffraction, nitrogen adsorption, TG DTA, SEM and pyridine temperature programmed desorption(TPD) were used to characterize the synthesized MCM 41 The results showed that all the samples exhibit a typical XRD diffraction of MCM 41 and adsorption isotherm of type Ⅳ The sample had high relative crystallinity, uniform mesopore distribution and high surface areas TG DTA cure showed that the samples were thermally stable The pyridine TPD spectras showed that MCM 41 possesses only some weak and middle strength acid sites The MCM 41 was used as one of active components of the catalysts, The MAT results showed that the cracking activity was lower, but the ratio of diesel to gasoline yield was higher It meant that thick well MCM 41 might be potential for higher selectivity to diesel

在水热条件下用新的合成控制手段得到孔壁较厚的MCM 41介孔分子筛材料 ,并采用XRD、N2 吸附、TG DTA、SEM和吡啶程序升温脱附等测试手段对合成的MCM 41样品进行表征 ,结果表明合成的介孔材料结晶度比较高 ,具有六方排列的孔道结构 ,孔径分布较窄 ,BET表面积较大 ,样品热稳定性高 ,吡啶 TPD谱图表明样品具有弱的或中等强度的酸性。用MCM 41作为活性组分制备成催化剂 ,进行微反活性实验 ,表明其裂化活性较低 ,但对柴油有较高的选择性

Quinoline catalytic cracking was studied on a fixed-bed microactivity test unit by using toluene, cetane, and tetralin as solvent. Reaction temperature, catalyst to oil ratio, weight hourly space velocity and feedstock nitrogen content affected the nitrogen content of spent catalyst and the nitrogen distribution in products. Catalyst acidity and hydrogen donating abilities of hydrocarbon solvent had marked effect on quinoline cracking. The coke on spent catalyst can be divided into three types, hydrocarbons,...

Quinoline catalytic cracking was studied on a fixed-bed microactivity test unit by using toluene, cetane, and tetralin as solvent. Reaction temperature, catalyst to oil ratio, weight hourly space velocity and feedstock nitrogen content affected the nitrogen content of spent catalyst and the nitrogen distribution in products. Catalyst acidity and hydrogen donating abilities of hydrocarbon solvent had marked effect on quinoline cracking. The coke on spent catalyst can be divided into three types, hydrocarbons, adsorbed nitrogen compounds, and condensed nitrogen. The possible reaction pathway of quinoline catalytic cracking is put forward. Quinoline could adsorb on catalyst surface by physical or chemical adsorption, or be deposited as coke via dehydrogenation. Quinoline could be converted into alkylquinoline. Quinoline could be hydrogenated into tetrahydroquinoline, which would be cracked into pyridine, aniline and ammonia.

采用固定床微反活性实验装置,以甲苯、十六烷、四氢萘为溶剂,研究了碱性含氮化合物喹啉的催化裂化转化规律。反应温度、催化剂与原料油的质量比、空速、原料氮含量都影响待生催化剂的氮含量和氮在产物中的分布。催化剂的酸性、烃类溶剂的供氢能力对喹啉裂化有显著影响。催化裂化待生催化剂上的焦炭由烃生焦、吸附氮焦和缩合氮焦组成。提出了喹啉催化裂化的可能转化途径:喹啉通过物理或化学作用吸附于催化剂表面,或在催化剂上脱氢缩合生焦;喹啉烷基化;喹啉加氢生成四氢喹啉,四氢喹啉进一步裂化转化为吡啶、苯胺和氨。

 
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