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PGMs in the Lab: New, Efficient Tools for Palladium-Catalysed Functionalisation of Heteroaromatics 实验室中的pgm:钯催化杂芳烃功能化的高效新工具
Platinum Metals Review Pub Date : 2013-10-01 DOI: 10.1595/147106713X672221
Alfa Aesar
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引用次数: 1
The Role of Platinum in Proton Exchange Membrane Fuel Cells 铂在质子交换膜燃料电池中的作用
Platinum Metals Review Pub Date : 2013-10-01 DOI: 10.1595/147106713X671222
Oliver T. Holton, J. W. Stevenson
{"title":"The Role of Platinum in Proton Exchange Membrane Fuel Cells","authors":"Oliver T. Holton, J. W. Stevenson","doi":"10.1595/147106713X671222","DOIUrl":"https://doi.org/10.1595/147106713X671222","url":null,"abstract":"Johnson Matthey, Orchard Road, Royston, Hertfordshire SG8 5HE, UK Email: *oliver.holton@matthey.com; **joe.stevenson@matthey.com Proton exchange membrane fuel cells (PEMFCs) dominate the transportation fuel cell market and platinum (Pt) is the catalyst material used for both anode and cathode. This review sets out the fundamentals of activity, selectivity, stability and poisoning resistance which make Pt or its alloys the best available materials to use in this application. It is clear that Pt is the only element which can meet the requirements for performance while avoiding slow reaction kinetics, proton exchange membrane (PEM) system degradation due to hydrogen peroxide (H2O2) formation and catalyst degradation due to metal leaching. Some of the means by which the performance of Pt can be enhanced are also discussed.","PeriodicalId":20208,"journal":{"name":"Platinum Metals Review","volume":"57 1","pages":"259-271"},"PeriodicalIF":0.0,"publicationDate":"2013-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1595/147106713X671222","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67346798","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 243
Final Analysis: Platinum Group Metal Catalysts for the Development of New Processes to Biorenewables 最终分析:铂族金属催化剂在生物可再生新工艺开发中的应用
Platinum Metals Review Pub Date : 2013-10-01 DOI: 10.1595/147106713X673194
Andrew D. Heavers, Michael Watson, A. Steele, Jeanette Simpson
{"title":"Final Analysis: Platinum Group Metal Catalysts for the Development of New Processes to Biorenewables","authors":"Andrew D. Heavers, Michael Watson, A. Steele, Jeanette Simpson","doi":"10.1595/147106713X673194","DOIUrl":"https://doi.org/10.1595/147106713X673194","url":null,"abstract":"","PeriodicalId":20208,"journal":{"name":"Platinum Metals Review","volume":"57 1","pages":"322-325"},"PeriodicalIF":0.0,"publicationDate":"2013-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1595/147106713X673194","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67346416","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Organometallics as Catalysts in the Fine Chemical Industry 有机金属催化剂在精细化工中的应用
Platinum Metals Review Pub Date : 2013-10-01 DOI: 10.1595/147106713X672320
M. Picquet
{"title":"Organometallics as Catalysts in the Fine Chemical Industry","authors":"M. Picquet","doi":"10.1595/147106713X672320","DOIUrl":"https://doi.org/10.1595/147106713X672320","url":null,"abstract":"","PeriodicalId":20208,"journal":{"name":"Platinum Metals Review","volume":"57 1","pages":"272-280"},"PeriodicalIF":0.0,"publicationDate":"2013-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1595/147106713X672320","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67346371","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 32
A Study of Platinum Group Metals in Three-Way Autocatalysts 铂族金属在三元汽车催化剂中的应用研究
Platinum Metals Review Pub Date : 2013-10-01 DOI: 10.1595/147106713X671457
J. Cooper, Joel Beecham
{"title":"A Study of Platinum Group Metals in Three-Way Autocatalysts","authors":"J. Cooper, Joel Beecham","doi":"10.1595/147106713X671457","DOIUrl":"https://doi.org/10.1595/147106713X671457","url":null,"abstract":"Johnson Matthey Emission Control Technologies, Orchard Road, Royston, Hertfordshire SG8 5HE, UK *Email: jonathan.cooper@matthey.com The price differential between platinum and palladium has driven the industry to adopt emissions control catalyst formulations for gasoline engines that contain higher levels of Pd than Pt, and in most cases no Pt. In addition fl uctuations in the price of rhodium have led to thrifting of this metal. This study compares the performance of ten different catalyst compositions with varying ratios of Pt, Pd and Rh for a Euro 5 vehicle and under bench test conditions. The results show that a system with low Rh loading can readily be improved by increasing the Rh loading and there is a relatively large effect of doing this by a small amount. Increasing the Pd or Pt loading also improves emissions performance but by a signifi cantly smaller amount than the effect of changing the Rh loading. Conversely it may be possible to decrease the Pt or Pd loading with only a small effect on emissions. Furthermore it was found that Pd outperforms Pt under most conditions, although not signifi cantly. The difference appears greater under more stressful conditions such as high-speed driving or wide perturbation amplitude.","PeriodicalId":20208,"journal":{"name":"Platinum Metals Review","volume":"57 1","pages":"281-288"},"PeriodicalIF":0.0,"publicationDate":"2013-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1595/147106713X671457","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67346808","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 32
Investigations into the Recovery of Platinum Group Minerals from the Platreef Ore of the Bushveld Complex of South Africa 南非Bushveld杂岩Platreef矿石中铂族矿物的回收研究
Platinum Metals Review Pub Date : 2013-10-01 DOI: 10.1595/147106713X673202
C. O'Connor
{"title":"Investigations into the Recovery of Platinum Group Minerals from the Platreef Ore of the Bushveld Complex of South Africa","authors":"C. O'Connor","doi":"10.1595/147106713X673202","DOIUrl":"https://doi.org/10.1595/147106713X673202","url":null,"abstract":"Anglo American Technical Solutions Research, PO Box 106, Crown Mines 2025, South Africa In the fl otation of platinum group minerals (PGMs) it has generally been assumed that they will behave similarly to base metal sulfi des and thus sulfi de reagent regimes are generally used in such fl otation plants. However the tellurides and arsenides of platinum and palladium contribute about 50% of the PGMs present in the Platreef ore, located in the northern limb of the Bushveld Complex of South Africa, and there is evidence of these minerals reporting to the fl otation tailings. The present investigation was aimed at studying the fl otation behaviour of tellurides, arsenides and sulfi des of Pt and Pd and relating these observations to their surface characteristics. Microfl otation, zeta potential determinations, time-of-fl ight secondary ion mass spectrometry (ToF-SIMS) and X-ray photoelectron spectroscopy (XPS) analyses were used to study the synthesised samples after various treatments. It was shown that in almost all cases the addition of a typical sulfi de collector, sodium isobutyl xanthate (SIBX), increased the recovery of all the Pt and Pd minerals investigated but that the presence of copper sulfate widely used to activate sulfi de minerals caused the recoveries to decrease. These results may question the value of adding copper sulfate in the treatment of Platreef PGM-bearing ore.","PeriodicalId":20208,"journal":{"name":"Platinum Metals Review","volume":"57 1","pages":"302-310"},"PeriodicalIF":0.0,"publicationDate":"2013-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1595/147106713X673202","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67346423","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 9
The Directed ortho Metallation-Cross- Coupling Fusion: Development and Application in Synthesis 定向邻位金属-交叉偶联融合:发展及其在合成中的应用
Platinum Metals Review Pub Date : 2013-10-01 DOI: 10.1595/147106713X672311
J. Board, Jennifer L. Cosman, T. Rantanen, S. Singh, V. Snieckus
{"title":"The Directed ortho Metallation-Cross- Coupling Fusion: Development and Application in Synthesis","authors":"J. Board, Jennifer L. Cosman, T. Rantanen, S. Singh, V. Snieckus","doi":"10.1595/147106713X672311","DOIUrl":"https://doi.org/10.1595/147106713X672311","url":null,"abstract":"Snieckus Innovations, Innovation Park, 945 Princess Street, Kingston, Ontario, K7L 3N6, Canada *Email: victor.snieckus@chem.queensu.ca This review constitutes a detailed but non-exhaustive examination of the directed ortho metallation (DoM)– cross-coupling fusion in its many fl avours. Special attention is paid to the application of the concept of the linked reactions and the synthetic utility that it endows, particularly in the case of one-pot reactions that can greatly increase the ease and effi ciency of the process. Personal experience of particular issues that can arise from these reactions and examples of their solutions are given, as well as illustrations of the rapid access to complex molecules that the technique encourages.","PeriodicalId":20208,"journal":{"name":"Platinum Metals Review","volume":"57 1","pages":"234-258"},"PeriodicalIF":0.0,"publicationDate":"2013-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1595/147106713X672311","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67346363","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 51
“Catalysts for Alcohol-Fuelled Direct Oxidation Fuel Cells” 醇燃料直接氧化燃料电池的催化剂
Platinum Metals Review Pub Date : 2013-10-01 DOI: 10.1595/147106713X671871
A. M. Bonastre
{"title":"“Catalysts for Alcohol-Fuelled Direct Oxidation Fuel Cells”","authors":"A. M. Bonastre","doi":"10.1595/147106713X671871","DOIUrl":"https://doi.org/10.1595/147106713X671871","url":null,"abstract":"","PeriodicalId":20208,"journal":{"name":"Platinum Metals Review","volume":"57 1","pages":"297-301"},"PeriodicalIF":0.0,"publicationDate":"2013-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1595/147106713X671871","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67346815","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 7
Recovery of Palladium from Spent Activated Carbon-Supported Palladium Catalysts 从废活性炭负载钯催化剂中回收钯
Platinum Metals Review Pub Date : 2013-10-01 DOI: 10.1595/147106713X663988
Ş. Sarıoğlan
{"title":"Recovery of Palladium from Spent Activated Carbon-Supported Palladium Catalysts","authors":"Ş. Sarıoğlan","doi":"10.1595/147106713X663988","DOIUrl":"https://doi.org/10.1595/147106713X663988","url":null,"abstract":"","PeriodicalId":20208,"journal":{"name":"Platinum Metals Review","volume":"23 1","pages":"289-296"},"PeriodicalIF":0.0,"publicationDate":"2013-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1595/147106713X663988","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67346531","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 22
Study of Copper/Palladium Nanoclusters Using Acoustic Particle Sizer 利用声波粒度仪研究铜/钯纳米团簇
Platinum Metals Review Pub Date : 2013-07-01 DOI: 10.1595/147106713X667632
G. Mishra, Devraj Singh, P. Yadawa, S. Verma, R. Yadav
{"title":"Study of Copper/Palladium Nanoclusters Using Acoustic Particle Sizer","authors":"G. Mishra, Devraj Singh, P. Yadawa, S. Verma, R. Yadav","doi":"10.1595/147106713X667632","DOIUrl":"https://doi.org/10.1595/147106713X667632","url":null,"abstract":"Department of Physics, University of Allahabad, Allahabad-211002, India In the present study polyvinylpyrrolidone (PVP) stabilised copper/palladium bimetallic nanoclusters were synthesised through chemical routes. The prepared Cu/Pd bimetallic nanoparticles were characterised by ultraviolet-visible (UV-vis) spectroscopy, X-ray diffraction (XRD) and transmission electron microscopy (TEM). The UV-vis absorbance band confi rmed the formation of complex metal ions triggered by the complexing agent trisodium citrate. The XRD pattern indicated the formation of bimetallic nanoparticles. The TEM images of the synthesised bimetallic Cu/Pd nanoparticles showed that the size distribution of the particles was in the range 5–15 nm. An acoustic particle sizer was then used to analyse the size distribution. The results obtained by the acoustic particle sizer were consistent with the XRD and TEM analyses. These results demonstrate the potential usefulness of the acoustic particle sizer for quick and easy characterisation of nanoparticles in various catalytic, sensor and fuel cell applications.","PeriodicalId":20208,"journal":{"name":"Platinum Metals Review","volume":"57 1","pages":"186-191"},"PeriodicalIF":0.0,"publicationDate":"2013-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1595/147106713X667632","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67346686","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 10
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