Catalytic performance of cement clinker supported nickel catalyst in glycerol dry reforming

The paper reports the development of cement clinker-supported nickel （with metal loadings of 5 wt%, 10 wt%, 15 wt% and 20 wt%） catalysts for glycerol dry （CO2） reforming reaction. XRF results showed that CaO constituted 62.0% of cement clinker. The physicochemical characterization of the catalysts revealed 32-folds increment of BET surface area （SBET） with the addition of nickel metal into the cement clinker, which was also corroborated by FESEM images. Significantly, XRD results suggested different types of Ni oxides formation with Ni loading, whilst Ca3SiO5 and Ca2Al0.67Mn0.33FeO5 were the main crystallite species for pure cement clinker. Temperature-programmed reduction analysis yielded three domains of H2 reduction peaks, viz. centered at approximately 750 K referred to as type-Ⅰ peaks, another peaks at 820 K denoted as type-Ⅱ peaks and the highest reduction peaks, type-Ⅲ recorded at above 1000 K. 20 wt% Ni was found to be the best loading with the highest XG and H2 yield, whilst the lowest methanation activity. Syngas with lower H2/CO ratios （0.6 to 1.5） were readily produced from glycerol dry reforming at CO2-to-Glycerol feed ratio （CGR） of unity. Nonetheless, carbon deposit comprised of whisker type （Cv） and graphitic-like type （Cc） species were found to be in majority on 20 wt%Ni/CC catalysts.     

中国分析测试协会简介

中国分析测试协会(China Association for Instrumental Analysis,CAIA,以下简称协会)是由全国分析测试及相关业务的单位和组织自愿组成的专业性社会团体,协会的宗旨是团结会员单位,围绕国家科技发展有关政策和规划,积极开展学术交流、技术培训、咨询服务等工作,同时加强与国际分析测试及仪器界的交流、合作,促进中国分析测试科学技术的普及、提高和发展。协会现有会员单位近300个,其中,分析测试中心约占40%;部门和地方院所约占24%;仪器生产厂商及贸易公司占36%。协会的会员单位包括了全国主要的分析测试单位和国内分析测试仪器企业,初步形成覆盖全国的分析测试网络。     

“第十五届全国离子色谱学术报告会”、“离子色谱高级培训班”会议通知

<正>"第15届全国离子色谱学术报告会"由中国仪器仪表学会分析仪器分会离子色谱专业委员会主办,定于2014年9月在成都举行。全国离子色谱学术报告会是国内离子色谱领域学术水平最高、规模最大的学术交流及展览会。会议每两年举行一次,展示广大离子色谱工作者近两年来在科研开发、生产应用等领域的新技术、新成果、新发明、新创造,为广大离子色谱工作者尤其是中青年工作者搭建展示才华、增进交流的平台。     

驱动问题引领下的核心反应在生产实际中的应用复习教学——以“铁和硫酸铜溶液的反应”为例

以铁和硫酸铜溶液的反应在“湿法炼铜”生产实际中的应用复习教学为例,针对学生能力的薄弱点,围绕核心反应搜集丰富的素材,引导学生模拟体会具体反应应用于生产实际时需考虑的问题,以问题解决为线索,达到促进学生发展的目的。     

对湖北省太湖农场农业生产结构优化模型的研究

首先探讨了湖北省太湖农场的农业生产各单元之间的结构关系和农业生产结构优化的需要过程,然后建立了包括种植业、养殖业和加工业在内的农业生产结构优化的线性规划模型     

面向装配节点平衡的产品生产物流协调优化研究

在由多个并行零件生产线和装配线组成的产品生产物流中, 各生产线的瓶颈工序制约了装配节点及其整个生产物流的平衡. 为此, 基于约束理论和JIT(Just In Time)思想, 提出主、次瓶颈的概念及其判别方法和主瓶颈拉动次瓶颈、瓶颈前后拉动生产与平行顺序移动生产相结合的生产策略, 研究了基于负荷率的瓶颈工序负荷控制方法和主瓶颈触发次瓶颈拉式生产的时间控制方法, 使瓶颈工序利用率最大化, 各个零件到达装配节点的同步性得到改善. 算例的SIMIO仿真结果表明, 装配节点的在制品存量大幅度减少, 利用率提高.     

Fractional pyrolysis of Cyanobacteria from water blooms over HZSM-5 for high quality bio-oil production

Fractional pyrolysis and one-step pyrolysis of natural algae Cyanobacteria from Taihu Lake were comparatively studied from 200 to 500 ℃. One-step pyrolysis produced bio-oil with complex composition and low high heating value （HHV〈30.9 MJ/kg）. Fractional pyrolysis separated the degradation of different components in Cyanobacteria and improved the selectivity to products in bio-oil. That is, acids at 200 ℃, amides and acids at 300 ℃, phenols and nitriles at 400 ℃, and phenols at 500 ℃, were got as main products, respectively. HZSM-5 could promote the dehydration, cracking and aromatization of pyrolytic intermediates in fractional pyrolysis. At optimal HZSM-5 catalyst dosage of 1.0 g, the selectivity to products and the quality of bio-oil were improved obviously. The main products in bio-oil changed to nitriles （47.2%） at 300 ℃, indoles （51.3%） and phenols （36.3%） at 400 ℃. The oxygen content was reduced to 7.2 wt% and 9.4 wt%, and the HHV was raised to 38.1 and 37.3 MJ/kg at 300 and 400 ℃, respectively. Fractional catalytic pyrolysis was proposed to be an efficient method not only to provide a potential solution for alleviating environmental pressure from water blooms, but also to improve the selectivity to products and obtain high quality bio-oil.     

白酒中二元酸二乙酯的固相微萃取与气相色谱联用快速测定

应用固相微萃取 (SPME)和气相色谱联用 ,以十四醇为内标 ,建立了快速测定豉香型白酒中庚二酸二乙酯、辛二酸二乙酯和壬二酸二乙酯 (统称二元酸二乙酯 )的方法;采用正交设计研究了萃取时间、解吸时间、盐效应等对萃取的影响 ,优化了分析条件 ;该法在0.05～10mg·L -1范围内有良好的线性范围和重复性 ,符合生产控制的要求     

硫酸铝生产过程中的萃取法除铁

Fe;萃取;硫酸铝生产过程中的萃取法除铁     

《中国催化剂企业名录(2013年版)》征订启事

《中国催化剂企业名录(2013年版)》由中国催化剂信息咨询网(http://www.ccicn.com.cn/)编辑出版,收录了全国约1000家催化剂及其原料科研、设计、生产制造单位详细信息,也收录了国内与催化剂专业有关的高校联系方式,还收录了部分催化剂检测仪器、评价和实验装置制造单位基本信息。《中国催化剂企业名录(2013年版)》开本为大32开,14 cm×20.3 cm,印数2500册。《中国催化剂企业名录(2013年