萃取-原子吸收光谱法测定高纯稀土氧化物中铁、铅、镍、锌

本文利用APDC/MIBK萃取体系,从高纯稀土氧化物中分离、富集铁、铅、镍、锌杂质元素,用火焰原子吸收光谱法测定,详细研究了萃取条件等,拟定了连续测定高纯稀土氧化物中铁、铅、镍、锌的分析方法,经对氧化(钅闲)、氧化钐等样品实际分析,获得满意结果。     

含金属烷氧化物作为共聚合组分的聚酯树脂及其制造方法

可以通过用合成聚酯的原料与金属烷氧化物或其衍生物（例如：烷氧化硅）的酯交换和缩聚来制得这种聚酯树脂，通过DSC分析，得知其熔化热函对结晶热函之比大于0．8。     

铁与等离子体改性后的碳纤维结合形成的新型铁

一种新型铁，其特征在于，所述新型铁是普通铁是与经等离子体环境改性后的碳纤维结合而形成的。处理碳纤维的等离子体环境可以是气体经电离形成的，等离子体环境可被所加电场和磁场所单独或联合作用，使等离子体产生移动及旋转，按预定程序对碳纤维进行改性处理，再让经等离子体环境改性后的碳纤维与普通铁结合，制造出优良品质的新型铁。     

二价铁离子对零价铁还原硝基苯的影响

为了解地下水环境中铁离子对零价铁(zero valention)还原作用的影响,采用批次实验,研究不同质量浓度二价铁离子对ZVI还原硝基苯的影响,利用HPLC和GC-MS作为分析工具,观测反应过程中硝基苯的质量浓度,同时跟踪溶液中Fe2+、pH、ORP的变化.结果表明,有无Fe2+存在,硝基苯均可被ZVI还原为苯胺,Fe2+没有改变还原产物;溶液中投加Fe2+后,ZVI还原硝基苯的反应速率明显加快,溶液中Fe2+对于还原反应起促进作用;溶液中Fe2+对ZVI体系pH起缓冲作用,含有Fe2+的ZVI体系ORP下降明显.反应动力学分析表明,硝基苯的还原反应符合假一级动力学模型,表观速率常数kobs值随Fe2+质量浓度的升高而增加,Fe2+离子的存在有助于ZVI对硝基苯的还原.     

Simulation and optimization of SOFC-BCHP system

As the prime motor of dispersed energy system, the high-temperature solid oxide fuel cells (SOFC) are high efficient with large heat recovery. This study presents a simulation of SOFC building-based cooling, heat and power (BCHP) system, which can meet basic requirements in power and heating (cooling) of the designated customers. The peak power load can be met by power grid, while the peak heating (cooling) load requirement can be met by backup equipments. In order to solve the economic dispatch problem of the energy system, a restricted nonlinear optimization model has been developed. The production costs can be minimized via both the equality constraints of customer’s heat and power demands, and other inequality constrains of equipments’ capacities. The sequential quadratic programming method has been used to search the solution. The study indicates that the model can be used to optimize the system’s capacities and run strategy. An office building case has been computed, and it is indicated that the model can be served in design and optimization of SOFC-BCHP system.     

铝合金中锌、铁的快速测定--原子吸收分光光度法

样品以盐酸溶解，加入过氧化氢助溶，蒸至近干．加入1 1盐酸提取，移入100mL容量瓶中，分取部分溶液于50mL容量瓶中，调整盐酸酸度为5％，用水稀至刻度，摇匀后，以空气-乙炔火焰水相直接测定锌和铁。为了消除大量基体元素的影响，在标准系列中加入相当量的铝。此方法快捷、简便，亦可用于锰、镁、铜、铅、镍的测定。     

新颖防锈颜料——复合铁钛粉

万达科技(无锡)有限公司是由加拿大万达国际集团投资设立的，并已于目前正式投入生产。利用超微细技术研制的复合铁钛粉，是万达科技独家生产的高科技创新产品，可完全替代红丹粉、铬酸铅、铁红粉、三聚磷酸铝、云铁粉等所有防锈颜料。复合铁钛粉以无机氧化物为主体，有害重金属总量在万分之二以下，是一种     

谁说铁汉无柔情？——360匹尚酷的Hellaflush情怀

许多国人都会有“大众情节”。“大众情节”既指国人对这个德国的汽车品牌（Volkswagen）的热衷;也泛指许多人没有自己的改装原则,一味随大众的情节。不可否认“神车党”在国内的高地位,它造就了一批以改装大众的发烧友。然而在这个年头,已经不是换个轮毂、改个避震就能算是玩开了改装。不然怎么会有VIP、Hellaflush、JDM等自成一派的改装风格昵,就像下面那台白色的Hellaflush尚酷。     

铁将军正式迈入微营销时代

9月18日,铁将军汽车电子有限公司在总部中山。举办了“驾豪车,赢iPhone”微营销活动发布会。这场活动正式宣告铁将军借助微博、微信、微视频。完成从线上销售、传播,到线下落地安装的一条完整微营销链条。     

Bioleaching of pyrrhotite by Sulfobacillus thermosulfidooxidans

The bioleaching of pyrrhotite was investigated using Sulfobacillus thermosulfidooxidans.The effects of pH,pulp concentration,inoculation amount,external addition of ferrous and ferric ions were examined.The pH is found to exert a profound effect on the leaching process for controlling the bacterial activity and precipitation of ferric ions mainly as jarosite.The results show that low pulp content increases the leaching rate of iron.The inoculation amount from 1×107 cell/mL to 1×108 cell/mL has positive effects on the leaching rate.The results also imply that addition of ferrous sulfate（1 g/L） is required for the bacteria to efficiently drive the extraction of iron,however,the leaching efficiency has no obvious enhancement when 2 g/L ferrous sulfate was added.Comparatively,addition of ferric sulfate（2 g/L） significantly inhibits the bioleaching process.At the end of bioleaching,jarosite and sulfur are observed on the surface of pyrrhotite residues by using XRD and SEM.With the passivation film formed by jarosite and sulfur,the continuous iron extraction is effectively blocked.