表面催化剂
- 网络surface catalyst
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对CO、CO2加氢合成甲醇平行反应提出了表面中毒催化剂效率因子的关键组分计算模型,并用正交配置法求解.硫化氢表面中毒深度由失活速率方程求得.计算结果表明。
A calculation model for the key comPOnents influencing on the catalytic effectiveness factor of catalyst with surds poisoning has been put forward with regard to the parallel methanol synthesis reactions of hydrogenation of CO and CO2 . The solution was obtained by orthogonal array method .
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用V-Ti-P-O系表面涂层催化剂气相催化氧化偏三甲苯制偏苯三酸酐
Preparation of trimellitic anhydride by catalytic oxidation in vapor phase with v-ti-p-o coating catalyst
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甲醇合成铜基催化剂硫化氢中毒研究(Ⅱ)&表面中毒催化剂效率因子
Hydrogen sulfide poisoning of methanol synthesis Cu-based catalyst (ⅱ) effectiveness factor of surface poisoned catalyst
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按照下列说明为支架表面施用催化剂:新的时间表从1月起已经实施。
Apply accelerator to the surface on the bracket according to the following instructions : The ver schedule have is in force january .
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不同亲疏水表面的催化剂对反应底物的吸附能力不同,孔壁疏水性越强,催化剂对反应速率的促进越明显。
The heterogeneous catalysts with different surface have different adsorption capacity to reaction substrate . The more hydrophobic of the pore walls , the improvment of catalyst to the reaction rate is more evident .
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V2O5MoO3SiO2表面复合氧化物催化剂的制备与表征
Preparation and characterization of v_2o_5 moo_3 sio_2 surface compound catalysts
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利用XRD、PM、SEM、EDAX和比表面测定对催化剂进行了表征。
The catalysts were characterized by XRD , PM , SEM , EDAX and surface area determination .
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硅对γ-Al2O3载体表面酸性及催化剂催化性能的影响
Effect of silicon on the acidic property of γ - Al_2O_3 and catalytic properties of alumina-supported Pt - and Pd-catalysts for benzene hydrogenation
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铂基Pb-Sb表面合金电催化剂的制备与结构表征
The Preparation and Characterization of Platinum Based Pb-Sb Surface Alloy Electrode
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噻吩的表面反应使得催化剂表面被硫化,并产生σ键合的表面C4物种,这些被认为是氮化物催化剂在噻吩HDS反应中失活的原因。H2S对氮化钼表面位的影响较噻吩更明显。
The surface reaction of thiophene leads to the sulfidation of molybdenum nitride catalysts and the formation surface a-bonded C4 species , which are considered as the reasons for the deactivation of nitride catalysts in HDS process .
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利用Hammett指示剂、吸附吡啶的TPD、XRD、EDX、SEM、DTA/TG、FT&IR、LRS等技术对催化剂酸性及酸强度分布、物相结构、表面组成、催化剂的焙烧过程等进行了分析表征。
The surface acidity and acid strength distribution , the phase structure , the surface composition , and the calcination procedure of the catalysts were analyzed and characterized by Hammett indicator , Py-TPD 、 XRD 、 EDX 、 SEM 、 DTA / TG 、 FT-IR and LRS .
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采用粉末冶金、溶胶-凝胶等工艺制备了金属多孔催化载体材料,测试其相关性能参数,并通过浸渍方法在载体表面负载了催化剂活性组分V2O5。
Porous metal catalytic carrier was prepared with powder metallurgy and Sol-gel technology , and the corresponding properties of the carrier materials were measured . Subsequently , the active component V_2O_5 of catalyst was charged by way of immersion .
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缓和加氢裂化催化剂表面酸性对催化剂活性的影响
Effect of surface acidity on activity of mild hydrocracking catalyst
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银表面甲醇氧化催化剂铁毒化后的表面特性
Surface characteristics of electrolytic silver catalysts for methanol partial oxidation poisoned by iron
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新型高比表面固体碱催化剂制备、结构及其性能研究
Investigations on Synthesis , Structure and Properties of New-Style High-Surface-Area Solid Base Catalyst
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草酸在表面合金电催化剂上还原过程的循环伏安和原位红外反射光谱研究
Reduction of Oxalic Acid on Surface Alloy / GC Electrode Studied by Using CV and in situ FTIR Spectroscopy
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金属催化剂能够以纳米小颗粒直接沉积于钛基体表面,而且催化剂颗粒结构稳定。
Results show that nano-metal catalysts particles are directly deposited on the surface of titanium substrate , and the catalysts have high stability . 3 .
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催化剂分解的活性组分富集在燃烧表面,不同催化剂使推进剂熄火表面形成不同的结构。
And the active components of catalysts deposit on the burning surface of propellants and the quenched surfaces of propellants with various catalysts possess different structure .
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从试验获得的数据表明,本文所制备的催化/热障功能梯度涂层中催化涂层的表面上有催化剂的烧结颗粒,这将必然影响到涂层的重整催化作用效果。
The experiment shows that the sintered catalyst particles were found on the surface of TBC-EBC samples , which will affect the catalysis performance of TBC-EBC .
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结果表明,自组法制备载铂电极表面的铂催化剂是以零价态即金属铂的形似存在的;低温制备电极的表面尚有微量的硫醇有机物存在。
The result of XPS showed that the valence state of Pt existed on the electrodes was zero valence , and there was a small quantity of thiol on the electrode .
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发现,在二甲醚合成过程中,催化剂表面酸性,催化剂表面吸附物种和表面积碳变化较小,不是导致催化剂失活的主要原因。
The results indicated that the catalyst deactivation did not result from the change in specific area , the acidity , the absorption species and carbon deposition on the catalyst during the DME synthesis process .
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运用原位发射红外还初步证实催化剂的活性中心具有Cu~(δ+)电价结构,探索出一条能通过分析表面物和催化剂相互作用而判断催化剂活性的新途径。
In the meantime , it is revealed ly In Situ Emission IR that the active sites possess Cu electrovalence structure . Finally , a new delicate way to estimate the catalytic activity through analysing the interaction between surface intermediates and the catalyst has been suggested .
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应用XPS,XRD和BET比表面测定方法对催化剂进行了表征。
XPS . XRD and BET method was used to characterize the catalysts .
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MoO3-SiO2表面复合物金属催化剂载体的制备与表征
Preparation and Characterization of MoO 3 SiO 2 Surface Compounds for Metal Catalyst Carriers
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碳纳米管的表面修饰对Co-Mo催化剂HDS性能影响的研究
Effect of the surface modification of multi-walled carbon nanotubes ( MWCNTs ) on hydrodesulfurization activity of Co-Mo / MWCNTs catalysts
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同时,对非负载型催化剂AgyBi1-x-yV1-3xMo3xΦxO4进行了对比研究和表征,结果表明,负载Al2O3载体能改善催化剂的表面结构,提高催化剂的反应性能。
For comparison , non-supported catalyst of Ag_yBi_1-x-yV_1-3xMo_3x Φ _xO_4 was studied and characterized . It was found that the supported oxide catalyst shows better character of surface and catalytic performance than non-supported one .
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加入的Al2O3富集于催化剂表面,改变了催化剂表面Cu2+和Zn2+的摩尔分数。
The added Al _2O_3 is accumulated on the catalysts ' surface , which changes mole fraction of Cu ~ ( 2 + ) and Zn ~ ( 2 + ) in the surface of the catalytic .
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以Cu(CH3COO)2·H2O和经硝酸处理的CNTs作为原料,采用多元醇法成功合成了纳米氧化亚铜均布于碳纳米管表面的复合光催化剂。
Homogeneous cuprous oxide nanoparticles dotted on the surface of multiwalled carbon nano - tubes ( CNTs ) were successfully synthesized with Cu ( CH3COO ) 2 ? H2O / treated CNTs precursors by polyol method .
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表面中毒甲醇成催化剂效率因子
The catalytic effectiveness factor of methanol synthesis catalyst subjected to surface poisoning
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结果发现,载体表面硫酸化后催化剂的活性大大增加。
It is found that the catalytic activities are greatly enhanced after sulfation .