• 红外光谱测试结果表明,催化剂表面主要存在L中心

    IR pattern indicated that Lewis acid centers mainly exist on the catalyst surface.

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  • 同时分析了孔隙率催化剂表面催化剂性能影响

    The influence of porosity and active catalyst surface area on the performance of cathode is analyzed as well.

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  • 不同方式影响催化剂表面态,进而导致催化性能不同。

    The manner of dipping acid effects on catalysts surface then cause different catalyst performance.

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  • 表面钝化过程中引入催化剂表面形成氧化

    The introduced oxygen in the passivated procedure reacts with the catalyst surface to form the thin oxide layer.

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  • XPS结果表明催化剂表面不同物种反应有不同的影响

    XPS results also indicated that different kind of metal sulfide species shows different effect on the reaction.

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  • 过渡金属元素固溶进入催化剂可以极大改变催化剂表面体相性质。

    The transition metal elements with various oxidation states could be introduced into the catalysts and mortify the performance of catalysts.

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  • 结合催化剂表面天然硫酸盐生成,对更换催化剂比值浸润问题进行论述。

    The issues of catalyst replacement and high ratio soaks are discussed within the context of natural catalyst sulphate.

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  • 认为二氧化碳存在保持催化剂表面活性状态促进甲醇分解合成速率

    It corroborates that carbon dioxide can remain the active state of catalyst surface and speed the rates of methanol decomposition and methanol synthesis reactions.

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  • 乙醛和缩醛化反应表明丙二醇的转化率主要催化剂表面酸度影响。

    The conversion of propylene glycol was mainly affected by the surface acidity of the catalyst.

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  • 运用红外表征手段活性抑制催化剂表面进行研究发现微量的硫酸盐生成。

    IR characterization showed that there was traced sulfate formed on surface of the catalyst after its activity was inhibited.

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  • 自制脉冲色谱吸附反应装置建立一种新的测定固体催化剂表面方法

    A new method for quantitatively measuring the surface acid amount of solid catalyst was set up on a self-made pulse chromatographic adsorbent reactor.

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  • 本文讨论了催化剂表面SEM图象关于多重生长过程分形多重分形特性分析

    The multifractal growth process of the SEM images of catalyst surface is studied using fractal and multifractal theory.

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  • 只有当催化剂表面活性浓度控制适当的范围催化剂表现最佳的催化行为。

    The optimal catalytic performance could be obtained by adjusting the surface concentration of active phase within a proper range.

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  • 噻吩原料加氢裂化生成积炭存在于不同孔径中,催化剂表面形成少量机械孔。

    The coke deposited due to thiophene impenetrated into all the pores and some of them could form mechanical pore on catalyst surface.

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  • 利用催化燃烧技术可使燃料有害尾气催化剂表面进行转化,燃烧效率达99.9%。

    The catalytic combustion technology enables fuels and harmful tail gas to react with each other on the surface of the catalyst with a combustion efficiency as high as 99.9%.

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  • 尽可能提高催化剂表面C4烯烃催化裂解制丙烯反应催化剂研制方向

    Enhancement of the quantity of strong acid sites is the trend in development of C4-olefins cracking catalysts.

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  • 晶粒尺寸变小,缺陷增加以及催化剂表面亲水性增强提高光电催化降解苯酚性能原因

    The enhanced PEC performance was attributed to the decease of the crystalline size, the increased amount of the oxygen vacancy and the enhancement of the hydrophilic performance.

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  • 利用程序升温氧化、差热分析、热重等方法考察了种长链烷烃脱氢工业铂锡催化剂表面积炭特征。

    Carbon deposits on two Pt-Sn commercial catalysts for the dehydrogenation of paraffins have been studied by temperature programmed oxidation (TPO).

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  • 实验采用TPSRTPDXPS脉冲反应方法系统研究镍基催化剂表面形态和特点

    The varieties and features of surface carbon depositions on nickel catalyst were extensively investigated by TPSR, TPD, XPS and pulse reaction methods.

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  • 糠醛催化剂失活主要原因大量积附着催化剂表面使活性中心被包从而使催化剂失去活性。

    The deactivation of the catalyst of furfural decarbonylation is mainly due to carbon deposition attached to the catalyst surface, it leads to the active site embedded, so the catalyst losed activity.

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  • 动态过程中催化剂表面吸附物种浓度随时间而变化,从而可以获得稳态流动不能提供信息

    Useful information provided by steady state flow method can also be obtained from dynamic experiment as the concentration of the absorbed species on the catalyst surface changes with time.

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  • FTIR表征表明反应催化剂表面乙酸物种生成,尤其是含水进料方式反应后的催化剂表面尤为明显。

    The characterization of FTIR demonstrates that the acetic acid species is adsorbed in the catalyst surface after reaction, especially the reaction with water.

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  • TPDTPSR结果表明CO占据催化剂表面部分活性抑制CO2逆水煤气转换,促进了甲醇生成

    The results of TPD and TPSR indicated that CO occupied the active sites, thus suppressed the reverse water-gas reaction of CO2 and enhanced the formation of methanol.

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  • 本文介绍了催化分解臭氧过程中,臭氧催化剂表面吸附形态各种条件下反应下臭氧催化分解的动力学机理

    This review provides many kinds of adsorbed ozone forms on the catalyst surface and the kinetics and mechanism of ozone decomposition reaction.

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  • 微波技术可以有效缩短制备催化剂时间,改善催化剂表面的晶体类型,提高催化剂活性催化领域具有广阔应用前景

    The microwave technology can shorten the time of preparation of catalyst, optimize the crystallographic texture and improve the catalytic activity. It has a wide application prospect in preparation...

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  • 通过对比催化剂表面温度振荡产物CO_2的浓度振荡观察到各种复杂的非稳态过程,加深了对产生化学振荡的机理认识。

    Various complex unsteady states were observed by the comparison of the catalyst surface temperature oscillations with the CO_2 concentration oscillations in products.

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  • 吡啶-TPDXRD 表征结果证明硫化温度和硫化还原工序,会改变催化剂表面酸性和硫化活性物种催化剂表面聚集状态。

    Pyridine-TPD and XRD results indicated that sulfiding temperature, sulfiding and reducing processes affected acidity and agglomerate state of activity species.

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  • TPD-MSTPSR-MS结果表明,CO能抑制催化剂表面水汽变换作用活性位CO2吸附从而提高CO2加氢合成甲醇的选抒性。

    TPD MSand TPSR MS results indicate that COcan suppress the adsorption of CO2 on the sites, which bring about the reverse water gas shift reaction and hence promote the selectivity of methanol.

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  • 多相催化剂吸附表面使固定在那里

    The heterogeneous catalyst first attracts the salt to its surface and holds it there.

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  • 多相催化剂吸附表面使固定在那里

    The heterogeneous catalyst first attracts the salt to its surface and holds it there.

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