8MPa压力下甲醇合成反应本征动力学研究

在等温积分反应器中测定了甲醇合成反应本征动力学,实验压力为8MPa,体积空速为5000~10000h-1,反应温度200~260℃,实验采用0.154~0.198mm的铜基国产商用催化剂。以双曲型动力学方程形式建立了以各组分逸度表示的CO、CO2加氢合成甲醇的双速率本征动力学模型,用参数估值方法根据实验数据获得了动力学模型中的参数。残差分析和统计检验表明,动力学模型是适宜的。     

合成气制甲醇铜基催化剂的研究新进展

概述了以合成气为原料合成甲醇反应中铜基催化剂的研究现状和最新进展,其中分别讨论了铜基催化剂的制备方法、助剂、活性中心以及甲醇合成的机理和动力学等方面内容。     

Novel Esterification Catalyst Developed by Xiamen University

The first in China unit for direct separation of ethylbenzenefrom mixed xylenes was constructed by Zhongke Petro-chemical Group of Liaoning province. It is learned that thisunit, which adopts the technology composed of a packed     

Novel Esterification Catalyst Developed by Xiamen University

Xiamen University after conducting investigations for manyyears has developed a novel esterification catalyst. The ad-vantages of this catalyst are as follows. There are nearly zerowaste discharges in the course of manufacture and applica-     

甲醇气相氧化羰化合成碳酸二甲酯 Ⅲ.复合载体铜基催化剂的表征

采用X射线衍射、表面物理吸附、CO原位吸附红外光谱、X射线光电子能谱以及热重分析方法对甲醇直接气相氧化羰化合成碳酸二甲酯的复合载体铜基催化剂(Cu(Ⅱ)/Naβ-AC)的物化性能进行了表征。实验结果表明,微波辐射条件下制备的Cu(Ⅱ)/Naβ-AC催化剂中,活性组分CuC l2一方面与分子筛载体间发生了固相离子交换反应,并形成了铜分子筛物种,另一方面,可直接高度分散在复合载体表面。反应后Cu(Ⅱ)/Naβ-AC催化剂中部分Cu2+被还原为Cu+或Cu0,Cu2+的结合能峰向低结合能方向迁移,但微波辐射处理并未破坏分子筛载体的骨架结构。采用复合载体增加了催化剂的比表面积,并产生一定量的微孔,从而提高了催化剂的氧化羰化反应活性。热重分析表明,当温度低于350℃时,Cu(Ⅱ)/Naβ-AC催化剂稳定性较好。     

NC310 Catalyst for Methanol Synthesis Developed by SINOPEC Research Institute of Nanjing Chemical Company

<正>The NC310 type catalyst for methanol synthesis developed by the SINOPEC Research Institute of Nanjing Chemical Company has passed the appraisal of research achievements organized by the Science and Technology Division of the Sinopec Corp.The group of specialists attending the appraisal meeting has recognized that this     

New Generation Catalyst for Methanol Pyrolysis Developed by CAS Passed Appraisal

正On June 4,2012 the Science and Technology Department of Shanxi province organized an meeting for assessing the achievements of the project Research and development of a new-generation high-selectivity catalyst for methanol pyrolysis undertaken by the CAS Shanxi Coal     

Bifunctional Catalyst for Direct Synthesis of Aromatics from Syngas Developed by the Wuhan University

正Recently the RD team of the Energy and Mechanical College of Wuhan University has developed a novel bifunctional catalyst for direct manufacture of aromatics via catalytic conversion of syngas. The said RD team has designed and synthesized a hollow HZSM-5 zeolite     

Core-Shell Zeolite Catalyst for Methylation of Toluene Developed by Hunan University

<正>The Hunan University has devised a core-shell structured zeolite(HSM-5@silicalite-1),which can be used as the methylation agent for manufacturing PX through reaction of bromomethane with toluene(CN103708496A,2014-04-09).Taking into account the demerits related with the structure of currently used catalysts,the research team has designed the composite catalyst     

二步共沉淀法制备的铜基甲醇合成催化剂的研究

固定Al含量为10%(Al/(Cu+Zn+Al),原子百分比),应用二步同时加料共沉淀法制备了一系列具有不同Cu/Zn比例的铜基甲醇合成催化剂。通过测试催化剂活性、结构和还原性质表明,n(Cu)/n(Zn)=4/5的催化剂中,CuO与ZnO二组分间相互均匀分散程度最大,催化剂活性最高,催化剂还原温度最低。考察了焙烧温度对催化剂活性、结构及还原过程的影响。     

甲醇羰基化合成乙酸催化剂的研究进展

综述了甲醇羰基化合成乙酸催化剂的研究情况,重点介绍了孟山都工艺和当前的研究热点,并对我国未来的发展趋势作了展望。     

CuO-ZnO/ZrO_2催化剂上CO_2催化加氢合成甲醇的研究

采用并流共沉淀法制备了CO2加氢合成甲醇的CuO-ZnO/ZrO2催化剂,考察了反应温度、压力和空速等对催化剂性能的影响,并进行了催化剂活性稳定性评价。在原料气配比一定,CO2催化加氢合成甲醇较好的工艺条件为反应温度250℃,压力2.0MPa,空速1600h-1时,此时CO2转化率为23.1%,甲醇的选择性为50.2%。催化剂重复使用5次,CO2转化率仍在20%以上,催化剂活性稳定性较好。     

Green Technology for Preparation of Methanol Synthesis Catalyst Developed by SINOPEC Nanjing Research Institute of Chemical Industry Passed Review and Evaluation

On July 29,2020 the project“Development of key technology for green production of methanol synthesis catalyst”undertaken by the SINOPEC Nanjing Research Institute of Chemical Industry(NRICI)has passed the review and evaluation of scientific achievements organized by the SINOPEC Science and Technology Division.The relevant experts attending the review and eveluation meeting have proposed to speed up the development of process design package(PDP)in a bid to push on its commercial application.In China the catalyst production factories generally discharge a large amount of wastewater containing various metal salts.The 2017 version of“Standard for Discharge of Pollutants from Peroleum Refining Industry”has for the first time set limits on total nitrogen emissions,and the wastewater generated in the course of catalyst production shall be treated to comply with the emission standard.     

Technology for Manufacture of Ethanol from Straw/Sugar Cane Waste Developed by Xiamen University

The Life Science College of Xiamen University uses high-efficiency microbes to convert the cellulose in the strawinto fermentable carbohydrates along with production ofethanol.This project has set up a cellulose biomass decompositionsystem and after having selected strains of cellulose pro-     

Guard Catalyst for Removing Carbonyl Iron/Carbonyl Nickel during Methanol Synthesis Developed by SINOPEC Nanjing Chemical Research Institute Has as HPassed Appraisal

On December 28, 2020 the project on R&D of guard catalyst for removing carbonyl iron/carbonyl nickel undertaken by the SINOPEC Nanjing Chemical Research Institu...     

CO_2加氢一步合成二甲醚催化剂的研究进展

针对CO2加氢一步合成二甲醚催化剂的活性载体、助剂、沉淀剂及沉淀次序、焙烧温度和制备方法等对中间产物甲醇合成的影响进行了综述,介绍了甲醇脱水催化剂组分的研究现状,并对催化剂的失活原因进行了分析,同时阐述了甲醇合成与甲醇脱水复合结构催化剂的研究趋势,最后提出了高效催化剂的研究开发思路。     

Commercial Application of the CTV-IV Type Catalyst for Synthesis of Vinyl Acetate Developed by Shanghai Petrochemical Research Instit

The CTV-IV type catalyst for synthesis of vinyl acetate developed by the SINOPEC Shanghai Petrochemical Research Institute (SPRI) has been successfully applied on the #2 vinyl acetate unit at SINOPEC's Shanghai Petrochemical Company.     

New Process for Synthesis of Methanol from CO2 under Mild Condition Developed by CAS Shanghai Institute of Organic Chemistry

The conversion of CO2 to methanol is an important topic associated with the resource availability,the energy and the environment.Since CO2 is an inert chemical,the chemical conversion of CO2 to methanol under mild conditions is a challenging scientific issue,which also comprises an important part of the forwarding-looking concept of the ＂13 5＂ program of the CAS Shanghai insti-tute of Organic Chemistry-＂A new generation of catalytic conversion leading to green synthesis＂.     

Commercial Application of the CTV-Ⅳ Type Catalyst for Synthesis of Vinyl Acetate Developed by Shanghai Petrochemical Research Institute

The CTV-IV type catalyst for synthesis of vinyl acetate developed by the SINOPEC Shanghai Petrochemical Research Institute （SPRI） has been successfully applied on the #2 vinyl acetate unit at SINOPEC＇s Shanghai Petrochemical Company.