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Preparation of Pt/K_2la_2Ti_3O_(10) and its photo-catalytic activity for hydrogen evolution from methanol water solution

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Science China Chemistry 2006年第2期49卷 162-168页

作者： CUI Wenquan1,3, LIU Li2, FENG Liangrong1, XU Chenghua1, LI Zijian1, Lü Shaojie1 & QIU fali1 1. Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, China 2. Chemistry Department, Sichuan University of Science & Engineering, Zigong 643033, China 3. Graduate School of the Chinese Academy of Sciences, Beijing 100039, China Correspondence should be addressed to Qiu fali 1. Chengdu Institute of Organic Chemistry Chinese Academy of Sciences Chengdu 610041 China 3. Graduate School of the Chinese Academy of Sciences Beijing 100039 China 2. Chemistry Department Sichuan University of Science & Engineering Zigong 643033 China

A layered perovskite-type oxide K2la2Ti3O10 was prepared with high-temperature solid-state reaction, and characterized with X-ray diffraction (XRD) and ultraviolet-visible diffuse re-flectance spectroscopy (UV-Vis DRS). Platinum was loaded onto K2la2Ti3O10 as a co-catalyst with different methods. The dispersion of platinum on K2la2Ti3O10 was determined with HOT method. The photocatalytic activity of Pt/K2la2Ti3O10 was studied. This catalyst showed much higher activity in hydrogen evolution reaction than Ni/K2la2Ti3O10. The effects of different amounts of loaded platinum and several preparation methods were evaluated. The best achieved hydrogen evolution rate was 233.88 μmol·h?1 by Pt(2%)/K2la2Ti3O10. A possible band structure and mechanism were discussed based on the results.

关键词： photocatalysis hydrogen platinum K_2la_2Ti_3O_(10) support

Pharmacogenetics implementation in the clinics:information and guidelines for germline variants

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Cancer Drug Resistance 2019年第1期2卷 53-68页

作者： Gladys Olivera Luis Sendra María JoséHerrero Pablo Berlanga Pablo Gargallo Yania Yáñez Andrea Urtasun Jaime Font de Mora Victoria Castel Adela Cañete Salvador faliño Pharmacogenetics Platform Instituto de Investigación Sanitaria la FeValencia 46026Spain Department of Pharmacology University of ValenciaValencia 46010Spain Department of Pediatric and Adolescent oncology Institute Gustave Roussy CenterVillejuif 94800France Pediatric Oncology Unit Hospital Universitario y Politécnico la FeValencia 46026Spain Pediatric Clinical and Translational Research in Cancer Instituto de Investigación Sanitaria la FeValencia 46026Spain

The aim of this work was to supply an overview of the germline Pharmacogenetics that can be already implemented in the oncology clinical *** explanation of the three pillars considered necessary for determining which genetic polymorphisms should be used has been *** are PharmGKB single nucleotide polymorphism(SNP)-Drug Clinical Annotations with levels of evidence 1 or 2;the genetic information provided in the drug labels by the drug regulatory main agencies(Food and Drug Administration and European Medicines Agency,mainly);and the guidelines elaborated by international expert consortia(mainly Clinical Pharmacogenetics Implementation Consortium and Dutch Pharmacogenetics Working Group).A summary of the relevant SNPs and the recommendations on how to apply their results has also been compiled.

关键词： Polymorphisms Pharmacogenetic PharmGKB guidelines oncology clinical implementation

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甲烷氧化偶联制乙烯高选择性催化剂的研究

石油与天然气化工 1999年第3期28卷 155-157页

作者：吕绍洁邱发礼中科院成都有机化学研究所天然气转化开放实验室

制备了甲烷氧化偶联制乙烯高选择性催化剂，考察了ＭｇＯ－ＢａＯ、ＳｒＣＯ３－ＢａＯ、Ｌａ２Ｏ３－ＢａＯ体系催化剂的活性和选择性及ＣＨ４／Ｏ２、反应温度和空速对催化剂性能的影响。实验表明在反应条件为... 详细信息

制备了甲烷氧化偶联制乙烯高选择性催化剂，考察了ＭｇＯ－ＢａＯ、ＳｒＣＯ３－ＢａＯ、Ｌａ２Ｏ３－ＢａＯ体系催化剂的活性和选择性及ＣＨ４／Ｏ２、反应温度和空速对催化剂性能的影响。实验表明在反应条件为：ＣＨ４／Ｏ２＝７．８～８．０、反应温度８００～８２０ ℃、ＣＨ４空速为５０００～１００００ｈ－１的范围内，Ｌａ２Ｏ３－ＢａＯ体系催化剂的ＣＨ４转化率在１８％～２０％，Ｃ２的选择性能保持在８０％以上，用ＸＲＤ、ＸＰＳ对Ｌａ２Ｏ３－ＢａＯ体系催化剂进行表征，结果表明Ｌａ２Ｏ３富集于催化剂表面。

关键词：甲烷氧化偶联高选择性催化剂

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钨涂层及氧化镧合金面对等离子体材料研究

稀有金属材料与工程 2023年第2期52卷 645-650页

作者：种法力陈俊凌郑学斌徐州工程学院江苏徐州221000 中国科学院合肥物质研究院安徽合肥230031 中国科学院上海硅酸盐研究所上海200050

介绍了等离子体喷涂钨涂层和粉末冶金钨氧化镧合金面对等离子体材料的制备,并对其进行了性能分析,主要包括微观结构、杂质含量、气孔大小及气孔率分布、结合强度、热导率以及热负荷疲劳性能和承受能力。结果表明:真空等离子体喷涂钨涂... 详细信息

介绍了等离子体喷涂钨涂层和粉末冶金钨氧化镧合金面对等离子体材料的制备,并对其进行了性能分析,主要包括微观结构、杂质含量、气孔大小及气孔率分布、结合强度、热导率以及热负荷疲劳性能和承受能力。结果表明:真空等离子体喷涂钨涂层性能比大气喷涂钨涂层性能优越,是更为合适的钨涂层制备技术。真空喷涂钨涂层具有较低的气孔率、较高的热导率、较低的杂质含量和较优异的热负荷性能,能够承受10 MW/m^(2)、100周次疲劳测试。氧化镧弥散掺杂相具有钉扎作用,能够抑制钨烧结过程中的长大,有效提高钨材料强度,改善热负荷性能,W-1%la_(2)O_(3)(质量分数)材料能够承受6MW/m^(2)的热负荷。

关键词：钨氧化镧面对等离子体材料

Kinetics and reaction mechanism of phenol hydroxylation catalyzed by la-Cu_4FeAlCO_3

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Science China Chemistry 2005年第6期48卷 530-537页

作者： CHEN Chunxia1,2, XU Chenghua1, FENG Liangrong1, SUO Jishuan1 & QIU fali1 1. Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, China 2. Graduate School of the Chinese Academy of Sciences, Beijing 100039, China 1. Chengdu Institute of Organic Chemistry Chinese Academy of Sciences 610041 Chengdu China 2. Graduate School of the Chinese Academy of Sciences 100039 Beijing China

The present work synthesizes la-Cu4FeAlCO3 catalyst under microwave irradiation and characterizes its structure using XRD and IR techniques. The results show that the obtained la-Cu4FeAlCO3 has a hydrotalcite structure. In the phenol hydroxylation with H2O2 catalyzed by la-Cu4FeAlCO3, the effects of reaction time and phenol/H2O2 molar ratio on the phenol hy-droxylation, and relationships between the initial hydroxylation rate with concentration of the catalyst, phenol, H2O2 and reaction temperature are also investigated in details. It is shown the phenol conversion can reach 50.09% (mol percent) in the phenol hydroxylation catalyzed by la-Cu4FeAlCO3, under the reaction conditions of the molar ratio of phenol/H2O2 1/2, the amount ratio of phenol/catalyst 20, reaction temperature 343 K, reaction time 120 min, 10 mL distilled water as solvent. Moreover, a kinetic equation of v = k[la ? Cu 4 FeAlCO 3 ][C 6 H 5 OH][H 2 O 2]. and the activation energy of Ea=58.37 kJ/mol are obtained according to the kinetic studies. Due to the fact that the HO-Cu+-OH species are detected in la-Cu4FeAlCO3/H2O2 system by XPS, the new mechanism about the generation of hydroxyl free radicals in the phenol hydroxylation is pro-posed, which is supposed that HO-Cu+-OH species are transition state in this reaction.

关键词： rare earth, hydrotalcite, microwave irradiation, phenol hydroxylation, kinetics, reaction mechanism.

Ce掺杂K2la2Ti3O10催化剂的可见光高效催化制氢的研究

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化学学报 2010年第3期68卷 211-216页

作者：刘利崔文权梁英华邱发礼河北理工大学化工与生物技术学院唐山063009 中国科学院成都有机化学研究所成都610041

采用高温固相法合成了铈掺杂的K2la2Ti3O10催化剂,利用X射线衍射(XRD)、紫外-可见漫反射(UV-visDRS)、透射电镜(TEM)和X射线光电子能谱(XPS)对催化剂进行了表征.考察了催化剂的可见光催化分解甲醇水溶液制氢的活性,并对可见光催化机理... 详细信息

采用高温固相法合成了铈掺杂的K2la2Ti3O10催化剂,利用X射线衍射(XRD)、紫外-可见漫反射(UV-visDRS)、透射电镜(TEM)和X射线光电子能谱(XPS)对催化剂进行了表征.考察了催化剂的可见光催化分解甲醇水溶液制氢的活性,并对可见光催化机理进行了分析.研究表明,铈的掺杂没有改变K2la2Ti3O10的微晶结构,并使催化剂粒径有所减小.紫外可见漫反射分析表明禁带宽度为2.3eV左右,对可见光具有较高吸收.XPS表明la和Ti为+3和+4价,而Ce则是+3和+4的混合价态.担载2wt%Pt后,在可见光下光催化活性大大提高,当铈的掺杂量为0.5mol%(即Ce取代la的摩尔百分量)时,光催化活性达到最大,产氢速率为0.05mmol/h;光照5h后产氢量为0.22mmol,而纯K2la2Ti3O10的产氢量只有0.037mmol.

关键词：光催化 Ce掺杂 K2la2Ti3O10 可见光制氢

Research on arbuscular mycorrhizae in Cuba:a historical review and future perspectives

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Studies in Fungi 2021年第1期6卷 240-262页

作者： Furrazola E Torres-Arias Y Ojeda-Quintana L Fors RO Rodríguez-Rodríguez R ley-Rivas JF Mena A González-González S Berbara RLL Queiroz MB Hamel C Goto BT Instituto de Ecología y Sistemática CITMA Carretera Varona 11835 e/Oriente y LinderoLa Havana 19CalabazarBoyerosLa HavanaCuba CUM Cumanayagua Universidad de Cienfuegos“Carlos R.Rodríguez”CienfuegosCuba Universidade Federal Rural do Rio de Janeiro Instituto de AgronomiaSeropedicaRJBrazil Instituto Nacional de Ciencias Agropecuarias(INCA) Gaveta Postal 1San Joséde las LajasMayabequeCuba Universidad de Temuco Chile Programa de Pós-graduação em Sistemática e Evolução CBUniversidade Federal do Rio Grande do NorteCampus Universitário59072-970NatalRNBrazil Quebec Research and Development Centre Agriculture and Agri-Food Canada2560 Hochelaga BlvdQuebec CityQCCanada G1V 2J3

This review presents the development of researches on arbuscular mycorrhizae(AM)conducted in Cuba,a tropical Caribbean island rich in *** key findings from this work are highlighted and presented as a stepping stone for future *** research has contributed to understand the diversity and functionality of AM in several tropical ecosystems,mainly evergreen forests,agroecosystems,sand dunes and *** were conducted in 10 out of 16 provinces reported 79 AM species,representing 25%of the known species *** researchers have a great deal of expertise in Glomeromycota taxonomy and have described 11 new species,of which six were not reported elsewhere in the ***,important studies conducted in Cuba have shed light on the mycotrophic plants,the role of AM in forest ecosystems,and their use in crop *** contribution of AM to ecosystem processes is a priority line of *** and multidisciplinary researches are necessary to define the role of AM symbioses and improve biogeochemical *** created Cuban Mycorrhizal Research Network will help to coordinate validation campaigns for various biofertilizers with training courses for Cuban farmers to disseminate the key results on *** the challenges for Cuban mycorrhizologists,molecular(genomic)techniques,stable isotopes and nuclear magnetic resonance should also be included as priority lines of research in the future.

关键词： Arbuscular mycorrhizal fungi diversity ecosystems mycorrhizal research symbiotic associations

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比森特·福克斯任内墨西哥政治和经济的进展

拉丁美洲研究 2005年第2期27卷 14-15+18页

作者：李子文徐世澄拉美所

比森特·福克斯就任总统后,将墨西哥社会的民主愿望纳入了政府的提议中.他肩负的使命是明确的:建设一个以三权分立和巩固司法秩序为核心的国家.

关键词：墨西哥拉丁美洲福克斯政府印第安人森特音分经济政治

湿天然气中乙烷在碱土、稀土催化剂上氧化脱氢的研究

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天然气化工—C1化学与化工 1998年第2期23卷 9-13页

作者：卢萍邱发礼吕绍洁中国科学院成都有机化学研究所天然气开放实验室

在５５０～７００℃温度范围研究了碱土、稀土单组份催化剂对湿天然气中乙烷氧化脱氢反应的影响，结果表明，７００℃时碱土金属碳酸盐催化剂有较好活性，活性如下：ＢａＣＯ３＞ＳｒＣＯ３＞ＣａＣＯ３＞ＭｇＣＯ３。稀土氧化物催化剂... 详细信息

在５５０～７００℃温度范围研究了碱土、稀土单组份催化剂对湿天然气中乙烷氧化脱氢反应的影响，结果表明，７００℃时碱土金属碳酸盐催化剂有较好活性，活性如下：ＢａＣＯ３＞ＳｒＣＯ３＞ＣａＣＯ３＞ＭｇＣＯ３。稀土氧化物催化剂中轻稀土有较好活性、选择性。添加不同阴离子催化剂表现出不同的活性，ＢａＣＯ３有较好活性，在７００℃时对乙烷转化率为４７．２１％，乙烯收率为１８．８４％。催化剂活性与其晶格氧活动性有对应关系。

关键词：乙烷乙烯氧化脱氢湿天然气天然气催化剂