共胶法系列加氢裂化催化剂生产工艺的开发及工业应用

本文概述了共胶法系列加氢裂化催化剂生产工艺的技术特点，介绍了共胶法系列加氢裂化催化剂工业生产和应用情况。业已表明该系列催化剂易于大规模工业生产，催化剂具有很高的抗氮中毒能力、良好的产品选择性和加氢裂化活性稳定性，工业推广应用前景良好。     

SCG-1系列催化剂在茂名乙烯全密度聚乙烯装置上的应用

通过介绍SCG-1系列催化剂在茂名全密度聚乙烯装置中的应用历程,分析、对比SCG-1系列催化剂和进口催化剂在装置上的应用情况,包括催化剂的主要性能指标、催化剂在反应器中的表现,以及生产的产品种类和质量等,表明使用SCG-1系列催化剂,生产操作平稳,产品质量合格,各项性能指标等同或优于进口催化剂,已经在LLDPE装置上得到了大量的应用。     

Unipol聚丙烯工艺及其催化剂技术

从工艺流程、产品性能以及催化剂特点介绍了气相法Unipol聚丙烯工艺及其应用;侧重介绍了与Unipol工艺相配套GRACE公司的SHAC系列和CONSISTA系列气相法聚丙烯催化剂以及其内、外给电子体技术,并且对不同型号催化剂的用途展开了介绍;最后结合Unipol聚丙烯工艺在国内外的应用,说明了Unipol聚丙烯工艺先进的催化剂以及复配给电子体技术对于国产自主催化剂以及聚丙烯新产品的开发具有重要的指导作用。     

渣油固定床加氢系列催化剂的研制和工业应用

介绍了FZC系列渣油加氢催化剂包括保护剂、脱金属剂、脱硫剂和脱氮剂等的特点,以及催化剂制备过程中使用的新技术。实验室评价结果表明该系列催化剂活性高、稳定性好、容金属杂质能力强,工业应用结果显示该系列催化剂具有良好的低温活性,能满足工业生产的需要。     

多产柴油催化裂化催化剂的设计思路及工业应用

介绍了多产柴油催化裂化系列催化剂的基本设计思路及工业应用情况。应用结果表明，该系列催化剂增产柴油明显，其性能也较优良，能给炼厂带来良好的经济效益和社会效益。     

FH-40系列轻质馏分油加氢精制催化剂研制及工业应用

成功开发出性能优异的FH-40A/FH-40B和FH-40C新一代轻质馏分油加氢精制催化剂，该系列催化剂具有孔容大、比表面积高、加氢活性好及堆积密度小等特点。在同等工艺条件下，达到相同精制效果，FH-40系列催化剂比国内外参比催化剂活性高［（10～15） ℃］。工业应用结果表明，FH-40系列催化剂对原料适应性强，具有优异的加氢脱硫和加氢脱氮活性，是加工轻质馏分油的理想催化剂。     

催化汽油加氢脱硫降烯烃系列催化剂工业试生产及应用

介绍了RIDOS系列催化汽油加氢脱硫降烯烃催化剂的工业试生产及首次工业应用。该系列催化剂具有较高的压碎强度、较大的孔容和较高的比表面积,产品重复性好,制备工艺可行,易于工业化生产。在燕山石化进行的首次工业应用结果表明,该系列催化剂具有高的脱硫活性、高的烯烃饱和活性以及较少的辛烷值损失。     

陈化时间对铈锰碳烟颗粒物催化剂性能的影响

以硝酸铈和硝酸锰为原料，采用共沉淀法制备了系列铈锰催化剂，考察了陈化时间对催化剂性能的影响，并将其用于柴油车尾气中的碳烟颗粒物催化燃烧。结果表明，陈化时间对铈锰催化剂催化碳烟燃烧性能的影响显著。相对未进行陈化的催化剂，陈化7 h后催化剂活性曲线上的峰值温度降低了59℃,主要原因是陈化时间为7 h的铈锰催化剂表现出最佳的低温还原性能以及具有最多的表面氧物种吸附和脱附量，降低或增加陈化时间均对这两项关键指标产生不利影响。     

俄罗斯将采用单一反应器生产双峰树脂

Univation技术公司披露了其最新的聚合催化剂系列，用这些催化剂可以在一个反应器，而不是像通常那样用两个反应器就可以生产双峰树脂，这种催化剂系列将在俄罗斯的Tatarstan的装置进行工业化演示。     

催化剂在煤制甲醇工业中的应用

介绍了NC307催化剂、QDB系列耐硫变换催化剂、K8-11型耐硫变换催化剂、LC308型催化剂、RK-05型催化剂、MK型催化剂的基本性质和在煤制甲醇装置中的使用条件和使用情况。分析了各种催化剂在不同条件下的优点,以及影响催化剂性能的因素。     

Metal recovery and rejuvenation of metal-loaded spent catalysts

Metal recovery and/or rejuvenation technologies of the spent catalysts resulting from various sources are reviewed. The fluid cracking catalyst (FCC), resid fluid cracking catalyst (RFCC), hydrodesulfurization (HDS) catalyst, supported and unsupported precious metal containing catalysts, i.e., reforming catalyst, auto catalyst and other catalysts from a variety of industrial processes are targeted. The precious metal recovery technologies such as the processes using aqua regia, chlorination, segregation and Rose (metallurgical) method are discussed in detail. A series of the FCC demetalation/regeneration processes such as Met-X, Demet, Demet II, Demet III and Demet IV is also described from the view point of the developmental history. Two physical processes using the high gradient magnetic and density grading separator are also reviewed.     

Heterogeneous or Homogeneous? A Case Study Involving Palladium‐Containing Perovskites in the Suzuki Reaction

The utility of a series of palladium‐containing perovskite catalysts in the Suzuki reaction is described; turnover numbers of up to 400,000 are reported. A detailed investigation into the mode of action of these catalysts encompassing kinetic studies, catalyst poisoning, microscopy and three‐phase tests demonstrate that these heterogeneous materials are pre‐catalysts that operate by a solution‐phase mechanism     

过氧化氢氧化苯制苯酚的催化剂研究进展

综述了过氧化氢直接氧化苯制苯酚过程中相关催化剂的研究进展,重点介绍了含钛、钒、铁、铜的催化剂,同时给出了各种催化剂所达到的收率和选择性及其工业化前景。     

Catalytic performance and characterization of cobalt-nickel nano catalysts for CO hydrogenation

A series of Co-Ni nano catalysts were prepared by co-precipitation method. We investigated the effect of Co/Ni molar ratios precipitate and calcination conditions on the catalytic performance of cobalt nickel catalysts for Fisher-Tropsch synthesis (FTS). The catalyst containing 90%Co/10%Ni was found to be optimal for the conversion of synthesis gas to light olefins. The activity and selectivity of the optimal catalyst were studied in different operational conditions. The results show that the best operational conditions are the H₂/CO=2/1 molar feed ratio at 310 °C and GHSV=1,200 h^?1 under 5 bar of pressure. The prepared catalysts were characterized by powder X-ray diffraction (XRD), N2 adsorption-desorption measurements such as BET and BJH methods, transmission electron microscopy (TEM) and thermal gravimetric analysis (TGA).     

磷镍复合改性HZSM-5催化乙醇脱水制乙烯积炭行为研究

开发了镍改性HZSM-5,对分子筛进行了孔道和酸性的初步调变,在260 ℃下获得了较高的活性和选择性,但存在的问题是寿命较短,易积炭失活。因此,在Ni-HZSM-5的基础上,继续采用等体积浸渍法制备了不同磷酸负载量的复合改性HZSM-5,虽然提高了催化性能,但是仍然存在着失活的问题。通过对催化剂失活原因分析表明,反应过程中并没有发生磷的流失,且积炭对比表面积和孔道结构的影响较小,研究认为催化剂失活主要是由积炭对酸性位的覆盖导致。对积炭过程和积炭物种进行研究发现,随反应时间延长,催化剂表面积炭速率越来越低,且高温型积炭在积炭中所占比重逐渐增加,说明积炭不饱和度增加。积炭物种主要是含碳碳双键的烯烃聚合物、芳香族化合物和含酯基的物质。     

Synthesis and Characterization of Zirconia Supported Vanadium Incorporated Ammonium Salt of 12-molybdophosphoric Acid Catalyst for Aerobic Oxidation of Benzyl alcohol

A series of zirconia supported ammonium salt of molybdophosphoric acid (AMPV) catalysts with and with out vanadium incorporation are prepared in a single step adopting wet impregnation method. These catalysts are characterized by BET surface area, XRD, FT-IR and potentiometric titration. XRD and FT-IR techniques suggest the formation of Keggin ion on zirconia support. The high resolution FT-IR analysis reveals the incorporation of vanadium into the primary structure of Keggin ion. The catalytic functionalities of these catalysts are tested for the aerobic oxidation of benzyl alcohol. The vanadium containing AMPV results in higher selectivity towards the oxidation product compared to the catalyst without vanadium incorporation.     

Propylene polymerization using supported Ziegler–Natta catalyst systems with mixed donors

Magnesium dichloride supported titanium catalyst incorporated with varying concentration of ethylbenzoate and diisobutyl phthalate together as internal donor are synthesized. The synthesized catalysts are characterized and compared with respect to composition, phase characteristics, crystallite size, and particle morphology. Performance of catalysts containing mixed donors is compared with the conventional single donor-based catalysts. The polymerization studies of the catalysts for propylene polymerization show dependence of polymerization kinetics on relative concentration of diisobutyl phthalate and ethylbenzoate. Molecular weight characteristics of polypropylene obtained from these catalysts are studied and correlated with the nature and concentration of donors present in the catalyst. Morphology replication from catalyst precursor to polymer is observed irrespective of the nature of donor being incorporated in the synthesized catalyst. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2012     

Characterization of Modified Fischer–Tropsch Catalysts Promoted with Alkaline Metals for Higher Alcohol Synthesis

Abstract  

Two series of Cu/Co/Cr modified Fischer–Tropsch catalyst promoted with Zn or Mn and an alkaline metal (Me: Li, Na, K, Rb, Cs) were prepared by co-precipitation method and tested for high alcohol synthesis (HAS) at one hour on-stream and at two temperatures, 300 and 350 °C. The results indicate that the best selectivity toward high alcohols depends on temperature and catalysts composition and is obtained as follows: a) at 300 °C over catalysts without Zn and containing K, Na and Rb; b) at 350 °C over catalysts without Zn and containing K; c) at 350 °C over catalysts containing Zn as well as Li and Cs.     

铌酸的催化应用

铌酸和含铌化合物独特酸性和热稳定性,广泛的应用催化领域中。铌酸可直接作为固体催化剂,应用于水解、酯化、缩合、烷基化等反应中;铌酸也作为载体负载金属,应用于F-T合成、氧化反应和加氢等反应中;含铌化合物也可作为负载型催化剂,负载到不同类型的载体上;含铌化合物也作为助剂或光催化剂,广泛地应用于催化多种化学反应。铌类催化剂具有催化活性高、选择性好和使用寿命长等优点。研究开发新型铌类催化剂具有良好的应用前景。     

Decarboxylative coupling of heptanoic acid. Manganese, cerium and zirconium oxides as catalysts

A series of catalysts containing 20 wt.% of Mn, Ce and Zr oxides deposited on Al₂O₃, SiO₂ and TiO₂ has been studied in ketonisation of heptanoic acid. The most pronounced effect of alumina support on catalysts activity has been noted. Manganese oxide catalysts have shown the highest activity. The dependence of the concentration of MnO₂ active phase on catalyst activity has been determined. A chemical constitution of the side products accompanying 7-tridecanone has been assigned. Stability of MnO₂/Al₂O₃ catalyst activity in ketonisation of heptanoic acid in long-time test has been measured.