煤基石脑油加氢研究

采用三段加氢工艺对煤基石脑油进行了加氢处理,重点研究了反应温度、压力、空速对一段加氢效果的影响,并对该段催化剂的使用寿命进行了考查,初步探讨了三段加氢反应温度对加氢性能的影响。研究结果表明经过三段加氢后的产品溴值小于1.0 g Br/100 g,总硫小于0.5μg/g,可用于汽油调和组分、芳烃抽提或环保溶剂油。     

沸腾床渣油加氢处理催化剂失活研究

沸腾床催化剂失活主要是由于金属和焦炭沉积导致的,同时在沸腾状态下催化剂的物理和机械性质也发生了改变。使用后的催化剂向小的粒度分布方向偏移;催化剂沉积了大量的金属和焦炭,使催化剂的堆积密度增加,同时导致催化剂的孔结构、酸性质发生了变化。失活催化剂沉积的金属和焦炭在颗粒内外分布均匀,表明催化剂利用率较高。     

石脑油芳构化改质催化剂失活原因分析及失活催化剂的再生

对石脑油芳构化改质催化剂失活的因素分别进行了研究,结果表明:原料油中的氮化物、原料油含有水溶性碱类物质及反应过程中催化剂的结焦是导致石脑油芳构化改质催化剂失活的主要因素。因此。对石脑油芳构化的原料油,要求其中氮化物质量分数不得超过5.0μg·g~(-1),且不得含有水溶性碱类物质。也可以通过化学法脱碱、补充活性金属及活化处理等措施使其再生恢复活性。     

高含氮石脑油重整预加氢催化剂的选择

针对呼和浩特石化公司重整预加氢原料石脑油氮含量升高的问题,用新型HPL-2加氢催化剂进行了评价试验,得到了很好的结果,并提出了商业石脑油重整预加氢催化剂的选择原则.     

渣油加氢失活催化剂的再生研究

本文针对渣油加氢失活催化剂进行了探索性再生研究,采用不同类型、不同浓度的酸溶液对失活催化剂进行处理,利用氮气吸脱附、ICP等对催化剂进行表征,并考察了再生催化剂的渣油加氢脱硫活性。结果表明,乙二酸对失活催化剂上的Ni和V同时具有较高的浸取率,尤其是V的浸取率。适量浓度的乙二酸处理的再生催化剂,其加氢脱硫活性能够恢复到新鲜催化剂的80%以上。     

碳二选择加氢催化剂研究进展

简要分析了国内外碳二馏份选择加氢脱乙炔的工艺现状，又从载体、助催化剂和催化剂失活等方面介绍了碳二馏份选择加氢的研究进展，指出提高选择性、降低投资、节能降耗是乙烯工业发展的总趋势。     

新型催化剂实现催化裂解石脑油加氢

2012年7月29日,中国石油石油化工研究院研发的新型催化裂解石脑油两段加氢催化剂,在蓝星集团沈阳石蜡化工有限公司120 kt.a-1催化裂解石脑油加氢装置上应用成功。工业应用结果表明,装置运行稳定,催化剂完全满足了工业装置的要     

焦化石脑油加氢处理装置系统的发展——案例研究

AKZO Nobel在焦化石脑油加氢处理方面还是胜人一筹。其几种专有催化剂的硅容量大，硅穿透之后还能提供活性。这些性质很重要。更长的运转周期和对下游昂贵的贵金属重整催化剂的保护作用，可使炼厂赢得利润，节省开支。为满足日益     

渣油加氢失活催化剂有效利用的新途径

论述了将渣油加氢失活催化剂制备成加氢型和非加氢型新催化剂的工艺和方法,着重探讨了钒含量较高的失活催化剂加工为新型渣油加氢催化剂的方法和思路,并对渣油加氢过程中钒的作用机理进行归纳。     

重整原料预加氢催化剂的性能评价

为了考察086-11-46催化剂（W-Ni/SiO₂-Al₂O₃）加氢脱硫、加氢脱氮性能以及处理劣质原料油的能力,分别以直馏石脑油、加入吡啶的直馏石脑油和加入催化汽油的直馏石脑油为原料油,进行了086-11-46催化剂与国内某重整原料预加氢催化剂（Mo-Co/γ-Al₂O₃）的对比评价,并以直馏石脑油为原料,考察其稳定性。结果表明,086-11-46催化剂的加氢脱硫和加氢脱氮性能均优于对比剂,更加适合处理氮含量及烯烃含量较高的劣质原料油。086-11-46催化剂在入口温度低于对比剂15 ℃的条件下,产品与对比剂相当,稳定性优于对比剂。     

丁醛气相加氢催化剂的研究及工业应用

介绍了一种铜锌系丁醛气相加氢制丁醇的催化剂,并对催化剂的制备方法及加氢工艺条件进行了考察,得到了最佳的工艺条件:反应进口温度125~130℃,反应压力0.4~0.5 MPa,原料液空速0.40 h-1左右。在此条件下,丁醛的转化率在98%以上,丁醇的选择性在99%以上。进行了催化剂的放大制备和工业应用试验,成功替代进口催化剂,表现出良好的加氢性能和选择性,能够适应丁醇装置高负荷、长周期运行的需要。     

DMT加氢合成1,4-环己烷二甲酸二甲酯催化剂的研制

1,4-环己烷二甲酸二甲酯是一种重要化工中间体,广泛用于合成聚酯树脂、聚酰胺、醇酸树脂、增塑剂,生产技术和市场被少数国外公司垄断。采用水热表面原位生长法完成了高分散负载型加氢催化剂的研制,活性组分Pd的分散度提高至30%以上,质量分数降至0.5%以下,大幅降低了贵金属的消耗及催化剂成本。实验室加氢评价证明,该催化剂在反应温度160~200℃,氢压(5~7)MPa条件下,转化率大于99%,选择性大于95%,具有高催化反应活性与较好稳定性。     

NCG-6型苯加氢催化剂性能的研究

对NCG - 6型苯加氢催化剂在不同反应条件下的苯加氢性能进行了探讨 ,为该催化剂的推广应用提供参考依据     

异癸醛气相加氢制异癸醇催化剂的研究

研究了一种铜锌系异癸醛气相加氢制异癸醇催化剂的制备方法,考察了影响催化剂性能的几种因素,总结出较为合理和有效的制备工艺。     

辛烯醛气相加氢制辛醇催化剂及其工艺的研究

介绍了一种铜锌系辛烯醛气相加氢制辛醇的催化剂,并对催化剂的制备方法及加氢工艺条件进行了考察,确定了最佳的工艺条件。     

二氧化碳加氢合成甲醇催化剂研究进展

介绍了CO2加氢合成甲醇催化剂的研究进展,重点对负载型铜基催化剂的最新进展进行了综述。     

High performance monolithic catalysts for hydrogenation reactions

The performances of two different monolithic catalysts are compared in the selective hydrogenation of fatty acid methyl esters (FAMEs). The monolith samples were a classical square channel cordierite and one modified with -Al₂O₃ blocking the macroporosity of the cordierite and rounding the channel cross section. On both samples a carbon layer was applied by carbonization of a polyfurfuryl alcohol coating obtained by dipcoating. The carbon was oxidized to create anchoring sites for ion exchange with a tetraamminepalladium(II) nitrate solution resulting in a carbon supported Pd catalyst. The rounded channels yielded an even carbon layer, whereas in the square channels an uneven carbon distribution resulted and penetration in the wall. The rounded channel shows a superior performance compared to the square channel sample in the partial hydrogenation of FAMEs, evidenced by the much lower formation of trans double bonds at similar hydrogenation levels of the double bonds. This is ascribed to the much shorter diffusion distances of the reactants and products.     

Carbon dispersed iron-manganese catalyst for light olefin synthesis from CO hydrogenation

High performance iron-manganese catalysts dispersed with carbon to produce light olefins from CO hydrogenation were prepared by sol-gel method using citric acid as precursor. The effects of carbon content on the bulk structure, the water gas shift reaction, the chain propagation ability and the activity and selectivity of the catalysts were investigated. The results showed that the catalysts were gradually reduced during the decomposition of the precursor when calcined under pure N₂. The formation of iron-manganese mixed crystallites was favored and stabilized because of the enhanced interaction of iron and manganese with increasing carbon content. During the subsequent CO hydrogenation reaction, all the catalysts showed high activity and olefin selectivity. With increasing carbon content, the water gas shift (WGS) reaction was restrained and the chain propagation ability was inhibited. Catalysts with higher carbon content showed much lighter hydrocarbon products; however, the selectivity of CH₄ was almost unchanged. This work was presented at the 7 ^th Korea-China Workshop on Clean Energy Technology held at Taiyuan, Shanxi, China, June 26–28, 2008.     

Pt-Re/rGO bimetallic catalyst for highly selective hydrogenation of cinnamaldehyde to cinnamylalcohol

In the present work, a series of Pt-based catalysts, alloyed with a second metal, i.e., Re, Sn, Er, La, and Y, and supported on activated carbon, ordered mesoporous carbon, N-doped mesoporous carbon or reduced graphene oxide(rGO), have been developed for selective hydrogenation of cinnamaldehyde to cinnamylalcohol. Re and rGO were proved to be the most favorable metal dopant and catalyst support, respectively. Pt_(50) Re_(50)/rGO showed the highest cinnamylalcohol selectivity of 89% with 94% conversion of cinnamaldehyde at the reaction conditions of 120 °C, 2.0 MPaH_2 and 4 h.     

Effects of porous oxide layer on performance of Pd-based monolithic catalysts for 2-ethylanthraquinone hydrogenation

Pd/oxide/cordierite monolithic catalysts(oxide = Al_2O_3, SiO_2 and SiO_2\\Al_2O_3) were prepared by the impregnation method. The results of ICP, XRD, SEM–EDX, XPS and N_2 adsorption–desorption measurements revealed that the Pd penetration depth increased with increasing the thickness of oxide layer, and the catalysts with Al_2O_3 layers had the larger pore size than those with SiO_2 and SiO_2\\Al_2O_3 layers. Catalytic hydrogenation of 2-ethylanthraquinone(eA Q), a key step of the H_2O_2 production by the anthraquinone process, over the various monolithic catalysts(60 °C, atmosphere pressure) showed that the monolithic catalyst with the moderate thickness of Al_2O_3 layer(about 6 μm) exhibited the highest conversion of e AQ(99.1%) and hydrogenation efficiency(10.0 g·L~(-1)). This could be ascribed to the suitable Pd penetration depth and the larger pore size, which provides a balance between the distribution of Pd and accessibility of active sites by the reactants.