稀土在09CuPTi（RE）钢中的作用机理

为研究稀土在09CuPTi(RE)钢中的作用机理,首先需要研究稀土分别与铜、磷、钛的相互作用。本文用固体电解质电池定氧、低温无水电解及等离子发射光谱等测试手段,研究了Fe—Cu—Ce,Fe—P—Ce,Fe—Ti—Ce,溶液体系在1600℃平衡时溶质元素的相互作用规律。得到1600℃铁液中铈分别与铜、磷、钛相互作用系数e_(ce)~p、e_(ce)~(Ti);观察到铈不与铜、磷、钛生成金属间化合物,而与微量氧、硫生成Ce_2O_2S型化合物;得到1000℃时反应Ce_2O_2S=2[O]+2[Ce]+[S]的平衡常数K。用金相和岩相显微镜、扫描电镜、电子探针及X射线衍射等方法研究了稀土对09CuPTi(RE)钢的脱氧、脱硫作用、对夹杂物球化变性作用、提高力学性能的机理、以及稀土在该钢中的固溶量,并通过室内加速腐蚀试验研究了09CuPTi(RE)钢的耐大气腐蚀机理,得到了稀土在09CuPTi(RE)钢中的作用机理。     

纳米TiO2负载钯催化剂的性能研究

采用浸渍法制备了纳米TiO2负载钯催化剂,以乙炔选择催化加氢制备乙烯为反应模型考察了稀土元素La、空速对纳米Pd／TiO2催化剂性能的影响,并与纳米SiO2为载体的Pd—La／SiO2催化剂的性能做了比较。实验结果表明,纳米Pd／TiO2催化剂具有良好的催化活性和性能稳定性,La的加入显著提高了乙烯的选择性、增幅达加％左右。与Pd—La／SiO2催化剂相比,Pd—La／TiO2催化剂具有更高的选择性。     

稀土电解厂的设计及实践

前言Preface 混合稀土金属（RE）是由两个以上稀土元素组成的合金。如有的RE中含有La、Ce、Pr和Nd,有的RE中含有La、Ce、Pr。由于这两种混合稀土合金均有良好的特性,故在工业生产中得到了广泛应用。如用RE作为钢的净化剂（制成稀土钢）;在有色金属生产中用作添加剂（制成RE-Al,RE-Cu等合金）;RE与Fe可以生成稀土发火合金（用于制造打火石）;     

一种含有Fe—Mo—W合金的汽车催化剂及制备方法

本发明公开一种含有Fe—Mo—W合金的汽车催化剂及制备方法。它是以Fe—Mo—W合金为载体，Ce—zr—La复合氧化物和BaO为助剂，负载活性成分Pd制成。     

铈和其它助剂对Pd/m-ZnO催化剂甲醇水蒸气重整制氢性能的影响

以三嵌段高聚物F-127为模板剂采用水热法分别合成了介孔ZnO-MOx(m-ZnO-MOx,M=Ce、Mg和Zr)复合氧化物,研究了铈和其它助剂对Pd/m-ZnO催化剂甲醇水蒸气重整制氢反应性能的影响,并运用XRD、H2-TPR和BET等手段对载体及催化剂进行了表征.与Pd/m-ZnO-MgO 和Pd/m-ZnO-ZrO2催化剂相比,Pd/m-ZnO-CeO2催化剂具有较高的甲醇水蒸气重整制氢活性,m-ZnO-CeO2复合载体较大的比表面积、较小Pd粒子以及Pd与m-ZnO-CeO2较强的相互作用有利于Pd基催化剂制氢活性的提高.     

稀土在甲烷部分氧化制取合成气中的应用研究

稀土（La,Ce,Pr,Nd等）通常可以作为催化剂载体、助剂或与其它元素形成固溶体,成为催化剂的重要组成部分。文中系统地介绍了稀土在甲烷部分氧化（CPOM）制取合成气中的相关应用,重点分析了稀土作为催化剂载体、助剂、固溶体等在催化部分氧化制取合成气中的应用,并对其在CPOM中未来前景做出展望。     

稀土电解厂的设计及生产实践

1、前言 混合稀土金属（RE）是由两个以上的稀土元素组成的合金。如RE中含有La、Ce、Pr和Nd，或RE中含有La、Ce和Pr。因这两者均具有良好的特性，故在工业应用中获得了较好的用途。如RE作为钢的净化剂（制成稀土处理钢）。在有色金属中为添加剂（如RE-Al，RE-Cu等合金）。RE-Fe生成稀土发火合金（大量用于制造打火石）。电热合金的加入物（如RE-Fe-Cr-Al合金用于电热丝）。     

鈷—稀土二元系相图(上)

钴—稀土二元系相图,由于RE—Co磁体的发展,研究较为深入。已发表了包括Co—La、Ce、Pr、Nd、Sm、Gd、Dy、Ho,Er及Sc、Y在内的二元系相图。     

稀土在09CuPTi(RE)钢中的作用机理

为研究稀土在09CuPTi(RE)钢中的作用机理,首先需研究稀土分别与铜、磷,钛的相互作用。本文用固体电解质电池定氧、低温无水电解及等离子发射光谱等测试手段,研究了Fe-Cu-Ce,Fe-P-Ce,Fe-Ti-Ce溶液体系在1600℃平衡时溶质元素的相互作用规律。得到1600℃铁液中铈分别与铜、磷、钛相互作用系数e_(Ce)~(Cu)、e_(Ce)~P、e_(Ce)~(Ti);观察到铈不与铜、磷、钛生成金属间化合物,而与微量氧、硫生成Ce_2O_2S型化合物;得到1600℃时反应Ce_2O_2S=2[O]+2[Ce]+[S]的平衡常数K。用金相和岩相显微镜、扫描电镜、电子探针及X射线衍射等方法研究了稀土对09CuPTi(RE)钢的脱氧、脱硫作用、对夹杂物球化变性作用、提高力学性能的机理、以及稀土在该钢中的固溶量,并通过室内加速腐蚀试验研究了09CuPTi(RE)钢的耐大气腐蚀机理,得到了稀土在09CuPTi(RE)钢中的作用机理。     

稀土对Ru基加氢催化剂的改性研究

采用浸渍法制备了一系列的Ru-RE/sepiolite(海泡石)(RE=La,Ce,Tb或Y)催化剂,以二氧化碳甲烷化及苯加氢为探针反应,以TPD、TPSR、CO化学吸附和CS2中毒为手段系统地研究了RE对Ru/sepiolite催化剂的改性机制。结果表明,RE的加入显著影响Ru/sepiolite催化剂的催化性能。从机理上看,RE对CO2甲烷化性能的影响是通过对反应物活化过程中的能量因素及几何因素的调节作用来实现的。RE的加入增加了Ru/sepiolite催化剂的活性表面积、活性中心数和催化剂抗毒物的能力。研究还表明,RE的添加顺序亦对Ru/sepiolite催化剂的活性构成一定的影响。     

China's Major Non-ferrous Metals Imports & Exports

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Zinc Production by Province in 2014

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80% of Chinese Firms Purchasing Overseas Mines Ended up in the Red

<正>Minmetals Resources acquired the world’s largest copper mine under construction for USD5.85 billion.One after another,listed companies Jien Nickle,China Molybdenum and Chihong Zinc and Germanium raised money to get involved in overseas mining projects…SOEs and private enterprises are engaged in a frenzy of overseas mine purchasing.A reporter with Economic     

Copper Processing Profit Dropped Sharply,Copper Consumption Will Face Impact in the Second Half of the Year

正Judging from China’s copper consumption field,the biggest consumption unit is electric power,which accounts for 47%of total consumption;it is followed by light industry sector,including household electrical appliance,machinery,durable goods and hardware etc,which accounts for 22%of total consumption;followed by transportation field,     

Central Geological Prospecting Fund Newly Added 16.47 Million Tonnes of Bauxite in 2013

正In 2013,the Central Geological Prospecting Fund(CGPF)Project newly discovered 15 ore fields,including 3 large above ore fields,and 5medium sized ore fields.The reporter learned from the recently published"Annual Report of Central Geological Prospecting Fund Project(2013)"that,from 2006 to 2013 the CGPF     

Manufacturers of Copper Tube for Central Air Conditioner Use Face Mounting Pressure in the Final Quarter of the Year

正This year,the investment growth rate of real estate industry continued to slow down,sold area of commercial housing also dropped significantly,which brought huge pressure to the domestic air conditioning manufactures.In the first half of the year,by relying on high growth in national financial expenditure,along with investment in public infrastructure     

Xinjiang Ranks No.1 in Production of Primary Aluminum in China

正Kang Yi,Honorary Chairman of China Nonferrous Metals Industry Association,said recently at the Forum on Development of the Non-ferrous Metals Industry in Central and Western China held in Zhengzhou that,as more and more electrolytic aluminum factories in Xinjiang came into operation,the electrolytic aluminum output of Xinjiang had reached2,275,000 tons in the first 7 months this year,     

Shenhuo Coal Industry and Electricity Power Completed800,000 t/a Aluminum Project in Xinjiang

正"Xinjiang project has been completed according to schedule,but total completion and total start of production are two different concepts,after completion it still needs a gradual process of reaching production target."On the morning of November 3,Shenhuo Coal Industry and Electricity Power told investors the above statement on the investor interaction platform.     

Guangdong Metal Transaction Center has Become the Second Largest Precious Metal Transaction Platform Nationwide

正The reporter learned from Guangdong Province Precious Metal Transaction Center that in 2013the Center maintained healthy development momentum,and had become the second largest precious metal transaction platform in China in terms of market size;currently Guangdong is quickening steps of financial innovation for the Center,aiming to build a transaction center with international core competitiveness.     

Seven Rare Earth Projects Involving Close to 3 Billion Yuan Investment Landed In the HighTech Zone

正On May 22,Baotou Rare Earth Industry Cooperation Consultation MeetingProject Agreement-signing Ceremony was held in Ningbo,nearly 40 enterprises from Ningbo,Guangdong,Hunan,and Shanxi participated in project consultation.After multi-lateral communication,agreements were signed for a total of 7 rare earth projects successfully.