导电性腈纶中五硫化九铜（Cu_9S_5）的生成机理

研究了由２价铜盐、还原剂和硫化剂浴液处理法制备的导电性腈纶，探讨了导电主要成分五硫化九铜（Ｃｕ＿９Ｓ＿５）的生成机理。研究表明，导电性腈纶中的铜和硫均有多重价态；处理浴液中的１价铜（Ｃｕ￣＋）与纤维大分子上的腈基（－ＣＮ）生成四氰化铜（Ⅰ）的纤维络合物，并进而与浴液中的硫（Ｓ￣（２－））反应生成Ｃｕ＿９Ｓ＿５：络合物中Ｃｕ￣＋的配位数以４为主：导电性腈纶中Ｃｕ＿９Ｓ＿５的相对饱和量约为３０％。     

高速碰撞共沉淀法铜基甲醇合成催化剂的研制

开发出高速碰撞共沉淀制备铜基甲醇催化剂的新方法。用此法一步共沉淀制得的ｂ 催化剂，其分散度和催化剂表面单位Ｃｕ 原子的ＣＯ 转化数比ｅ 催化剂分别增加２０％ 和１４ ％ 。在催化剂Ｃｕ 质量分数减少３７％ 的情况下，其催化剂活性仍相当高，因此这是一种值得推广应用的催化剂制备新方法。     

脂肪醇固定床胺化理论与实践

本对正辛醇固定床脱氢胺化制频胺反应机理进行了阐述，制备了适宜该工艺的二元Ｃｕ／Ｃｒ及三元Ｃｕ／Ｚｎ／Ｃｒ催化剂，得到醇转化订〉９９％，叔胺选择性大于９４％的反应结果，对影响催化剂性能反应结果的制备因素及工艺条件进行了考查。     

湿式催化氧化法在处理分散染料废水中催化剂的选择和实验条件的优化

研究了湿式催化氧化法（ＣＷＯ）处理高浓度有机废水中催化剂的选择和实验条件的优化。在优选催化剂中共计制备１３种催化剂并进行了实验,得出ＡＩ、Ｃｕ复合催化活性最高,在实验条件优化中,根据对正交实验数据结果进行的极差分析发现ＣＷＯ法处理废水时的各影响因素的主次关系是：ＡＩ、Ｃｕ复合催化剂用量〉反应时间〉Ｈ２Ｏ２用量,并得到最佳条件是：１．０ｍＬ Ｈ２０２（３０％）,０．２ｇ ＡＩ、Ｃｕ氧化物复合催化剂和     

高活性炭载金属脱硫剂的制备与筛选

工业锅炉最经济的烟气脱硫温度为１２０－２５０℃,而绝大多数干法脱硫剂在该温度窗口却无法高铲脱除烟气中ＳＯ２,为制备该温度具有高脱硫活性的炭载性脱硫剂,分别对活性焦担载不同金属制备的脱硫剂在２００℃的脱硫活性进行了评价,结果表明：Ｃｕ／ＡＣ硫剂对ＳＯ２具体炭还原再生,通过对不同载铜量Ｃｕ／ＡＣ硫剂的活性公及ＴＰＲ和ＴＰＯ表征,发现了不高于５％的载铜量,活组组分ＣｕＯ在ＡＣ表面具有高的分散性,只存在表     

相转移催化合成1-辛氧基-4-硝基苯醚

在氢氧化钾碱性介质中,以四丁基溴化铵Ｂｕ４ Ｎ＋ Ｂｒ－ （ＴＢＡＢ） 为相转移催化剂,由对硝基氯苯（ＰＣＮＢ） 和辛醇（Ｃ８ Ｈ１７ ＯＨ）反应合成了１ 辛氧基 ４ 硝基苯醚,研究了催化剂、碱、温度等因素对反应的影响,最佳工艺条件为：ｎ（ＰＣＮＢ）∶ｎ（Ｃ８ Ｈ１７ ＯＨ）∶ｎ（ＫＯＨ）∶ｎ（ＴＢＡＢ）＝ １∶１．２∶１．５∶０．０３,反应温度为１００℃,产品收率为８５ ．０ ％ ,经液相色谱分析,产品纯度为９５．５％ 。     

用废铜泥制备硫酸铜

用废铜泥制备硫酸铜白炳贤，白涛白萍（河南师大化学系）（新乡市树脂厂科研所）硫酸铜（ＣｕＳＯ＿４·５Ｈ＿２Ｏ），是制备其它铜盐、含铜颜料、媒染剂、催化剂的重要原料，也广泛用于电镀、人造丝、制革、外用医药、农业杀虫剂、木材防腐等方面。为了充分利用铜原料，...     

铜基催化剂结构对烯醛滴流床和固定鼓泡床加氢效果的影响

采用共沉淀法制备了不同组成的铜硅、铜铬和铜锌复合氧化物催化剂。利用X射线衍射（XRD）、氢气程序升温还原（H₂-TPR）、氮气物理吸附（BET）和正丁胺电位滴定法等测试手段对制备的铜基复合氧化物催化剂的物化性质和孔结构进行了表征。考察了3种不同组成的铜基复合氧化物催化剂在滴流床和固定鼓泡床反应器中催化2-丙基-2-庚烯醛加氢的效果。结果表明：3种铜基复合氧化物催化剂的铜晶粒大小、表面酸碱性差异与催化2-丙基-2-庚烯醛加氢性能未呈现任何正向相关关系;具有丰富大孔的催化剂采用固定鼓泡床反应器催化烯醛加氢的效果优于采用滴流床反应器。     

甲醇脱氢制甲醛负载型铜基催化剂的制备及性能

用硝酸铜氨溶液浸渍硅胶制备了甲醇脱氢制甲醛催化剂ＣｕＯ／ＳｉＯ２，考察了铜源、ｐＨ值、铜负载量和助剂Ｃｒ对催化活性的影响．ＴＰＲ和ＸＲＤ研究表明，ＣｕＯ／ＳｉＯ２中起催化活性作用的主要是分散态ＣｕＯ，而聚集态ＣｕＯ增多会导致甲醛选择性下降，助剂Ｃｒ能明显提高ＣｕＯ／ＳｉＯ２的催化活性和抗还原能力．     

β-羟乙基乙二胺环合催化剂的研究

本文研究了 Ｃｕ／γ Ａｌ２ Ｏ３ 与 Ｃｕ Ｏ／γ Ａｌ２ Ｏ３ 两种催化剂对β羟乙基乙二胺环合反应的催化作用，证明在一定条件下，上述两种催化剂的作用类似，环合出哌嗪的收率可达８７％ 以上。此外，还对催化剂 Ｃｕ Ｏ／γ Ａｌ２ Ｏ３ 进行了修饰和改性，从而提高了催化剂的稳定性和选择性。用铜抑制剂处理载体而制备的催化剂，哌嗪的最高收率可达９２％ ；以γ Ａｌ２ Ｏ３ 超细粉为载体的催化剂的稳定性可得以提高。     

月季花红色素的提取与性质研究

研究了月季花红色素的提取条件及理化性质。结果表明在０１％盐酸 乙醇或５％盐酸溶液中易于提取，并得到粉状暗红色素，得率９２％。该色素属花青苷类色素，在酸性条件下对热、阳光和紫外光均具有较好的稳定性     

Hydrochloride extraction processing of zinc clinker

Data on the mineral, phase, and elemental compositions of a zinc clinker as zinc production waste have been given and the possibility of hydrometallurgical processing using HCl solutions has been investigated. The kinetics of the clinker interacting with HCl solutions of 50–200 g/L in the temperature range of 50–90°C has been studied. The high efficiency of the muriatic acid for the decomposition of both the magnetic fraction and the general clinker sample with the 95–99% extraction of iron and nonferrous metal in solution and the more than 3.5-fold reduction in the clinker mass have been determined. The possibility of processing the filtrate extraction from the decomposition of the clinker by HCl using 100% tributyl phosphate as an extracting agent while obtaining oxide product containing >97% Fe suitable for producing iron-oxide pigment has been shown.     

美人蕉花红色素的提取工艺

报道了提取美人蕉花红色素的最佳条件和工艺流程。最佳提取条件是:以体积分数为0.1%盐酸+60%的乙醇 水溶液作提取剂,温度为70℃,时间为3h,原料与提取剂配比为1g∶8mL。     

药桑色素的提取方法及分离研究

采用正交实验对药桑色素用不同溶剂、在不同时间、不同温度、不同配比下的提取工艺进行了探索,并用AB-8型大孔吸附树脂对其进行分离纯化。结果表明:用0.1%的HCl-C2H5OH溶液,按1∶5的配比在40℃提取1h为最佳提取条件。纯化后的色素为紫红色粉末,色价提高近7倍。初步分析表明药桑色素主要为花青素类色素。     

Liquid-Liquid Extraction of Ruthenium from Chloride Media by N,N'-Dimethyl- N,N'-Dicyclohexylmalonamide

Abstract

Research on the solvent extraction of ruthenium from hydrochloric acid media has been carried out using N,N'-dimethyl-N,N'-dicyclohexylmalonamide (DMDCHMA) dissolved in 1,2-dichloroethane. Ruthenium extraction percentages (%E) ranging from 50% to 80% have been achieved for HCl concentrations between 5 M and 7 M. Extraction curves exhibiting the dependence of the %E ruthenium on HCl concentration in the aqueous phases are presented, the latter solutions being obtained by dissolution of either Ru(III) or Ru(IV) salts. The influence of some experimental parameters on the %E Ru, such as the equilibration time, extractant concentrations, and hydrogen-ion activities, has been thoroughly investigated. Additionally, DMDCHMA is also adequate for extracting Pd(II) from 5 M to 7 M HCl solutions and under similar experimental conditions, %E Rh(III) is below 5%, and Pt(IV), Ir(III), and Ir(IV) cause the formation of third phases. Both Ru and Pd(II) can be successfully stripped from the loaded organic phases with water. A partition scheme to isolate Ru from a number of some associated elements has also been attempted.     

Efficient Extraction of Astaxanthin from Phaffia rhodozyma with Polar and Non-polar Solvents after Acid Washing

method of extracting astaxanthin from Phaffia rhodozyma with various solvents after acid washing was investigated. The extraction efficiency was distinctly increased after acid washing of P. rhodozyma cells. When the concentration of HCl was 0.4 mol·L^-1, the highest extraction efficiency of astaxanthin was achieved which was about three times higher than the control. Acetone or benzene as single polar or non-polar solvent was the most effective solvent in our research. With a combination of isopropanol and n-hexane (volume ratio of 2:1), the maximal extraction efficiency was achieved, approximately 60% higher than that obtained with a single solvent. The liquid-solid ratio and the extracting time were also optimized. Under the optimum extraction conditions, the extraction yield of astaxanthin exceeded 98%.     

采用极性及非极性溶剂从酸洗后的红法夫酵母中高效萃提虾青素的研究(英文)

method of extracting astaxanthin from Phaffia rhodozyma with various solvents after acid washing was investigated.The extraction efficiency was distinctly increased after acid washing of P.rhodozyma cells.When the concentration of HCl was 0.4 mol·L-1,the highest extraction efficiency of astaxanthin was achieved which was about three times higher than the control.Acetone or benzene as single polar or non-polar solvent was the most effective solvent in our research.With a combination of isopropanol and n-hexane(volume ratio of 2:1),the maximal extraction efficiency was achieved,approximately 60% higher than that obtained with a single solvent.The liquid-solid ratio and the extracting time were also optimized.Under the optimum extraction conditions,the extraction yield of astaxanthin exceeded 98%.     

构树果红色素的提取及其理化性质的研究

介绍了用乙醇从构树果中提取红色素的过程,并对其理化性质也进行了试验,实验结果表明,提取方法简单、实用,红色素易溶于水和乙醇,在中性和酸性介质中,对光、热、多数金属离子以及蔗糖、葡萄糖等食品添加剂都是稳定的,具有开发价值。     

桑葚红色素的提取及稳定性研究

从桑葚提取食品天然红色素,通过对提取剂、提取温度、溶液酸碱性的研究,确定了最佳提取条件,以及色素的稳定性。结果表明,桑葚色素的稳定性比较好,以95％乙醇为提取剂、提取温度60℃、ph=6弱酸性溶液为最佳条件,收率8．7％。     

萝卜缨绿色素的提取与性质研究

研究了萝卜缨绿色素的提取条件及理化性质。结果表明：在３０％ 丙酮水溶液，丙酮及５％ Ｎａ Ｏ Ｈ 水溶液中易于提取，并得到粉状绿色素，得率６．８％ 。该色素在碱性条件下对热、光均具有良好的稳定性。