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废镍触媒的综合利用工艺研究

山东化工 2001年第6期30卷 12-14页

作者：周长祥张荣斌山东省地质科学实验研究院山东济南250013 山东省化工研究院山东济南250014

扼要介绍了工业废镍催化剂的综合利用工艺研究。对其主成分Ni和Al均加以回收利用 ,分别制取结晶硫酸镍、氢氧化铝及氧化铝。产品质量达国家工业标准。Ni回收率高达 90 %。

关键词：镍铝废镍催化剂结晶硫酸镍氢氧化铝氧化铝综合利用废物处理

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双丙酮丙烯酰胺的合成

当代化工 2003年第4期32卷 194-195,207页

作者：苏碧泉盛丽牛克彦兰州交通大学化工学院甘肃兰州730070 兰州助剂厂甘肃兰州730070

双丙酮丙烯酰胺是一类重要的化工原料。该文综述了双丙酮丙烯酰胺 4种不同的合成方法 ,对常用的以丙酮、丙烯腈为原料的合成反应机理进行了讨论。对于该反应的合成条件优化以及替代浓硫酸催化剂的研究是今后研究的重点。报道的较为经济... 详细信息

双丙酮丙烯酰胺是一类重要的化工原料。该文综述了双丙酮丙烯酰胺 4种不同的合成方法 ,对常用的以丙酮、丙烯腈为原料的合成反应机理进行了讨论。对于该反应的合成条件优化以及替代浓硫酸催化剂的研究是今后研究的重点。报道的较为经济的反应条件为 :n(丙酮 )∶n(丙烯腈 )∶n (浓硫酸 ) =2 .4∶1∶1.1,反应温度 5 0℃ ,反应时间 4h。

关键词：双丙酮丙烯酰胺合成应用

Studies on the Alkylation Reaction of Isobutane with Butene

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Studies on the Alkylation Reaction of Isobutane with Butene

7th World Congress on Recovery, Recycling and Re-integration

作者： Lili Yang, Suojiang Zhang, Zengxi Li, Xiangping Zhang, Haijian Pang Institute of Process Engineering, Chinese Academy of Sciences, 1 Beiertiao, Zhongguancun, Beijing 100080, china Xinqian Shu china University of Mining and Technology, Beijing 100083, china

Alkylation of isobutane with butene is one of the important processes in chemical industry and it is also of considerable importance for the production of high-octane gasoline. Due to the strong Lewis acidity of the anions of Al2Cl7-, acidic chloroaluminate ionic liquid shows high catalytic activity in many chemical reactions including Diels-Alder and Friedel-Crafts reactions. In this work, the alkylation experiments were carried out in a stirred pressure autoclave, and the gas and liquid products were analyzed by gas chromatography. The properties of ionic liquids and the effects of operating variables were investigated and optimized, the implications of the most important process parameters on the alkylation performance were discussed, and the improvement of product distribution with high yields of C8 and selectivity of TMP under a mild reaction condition was observed. Under the optimized operation conditions, the catalytic performance of the ionic liquid was comparable with that of sulfuric acid.

关键词： alkylation, catalyst, ionic liquid, isobutane, butene

甲酸甲酯与三聚甲醛偶联合成乙醇酸甲酯研究 Ⅰ.过磷酸催化剂性能比较

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天然气化工—C1化学与化工 2003年第5期28卷 16-19页

作者：李志锋陈樑陈云华杞卫东林升诇蒋锦霜昆明理工大学一碳化工研究中心昆明650224 昆明理工大学一碳化工研究中心昆明650224云南化工研究院昆明650041 云南化工研究院昆明650041

研究以过磷酸为催化剂催化甲酸甲酯与三聚甲醛偶联合成乙醇酸甲酯。通过对以过磷酸、浓硫酸及过磷酸与浓硫酸混合酸为催化剂时反应现象、乙醇酸甲酯及甲氧基乙酸甲酯总产率等的对比研究,发现过磷酸具有良好的催化性,产品产率高达59 06%... 详细信息

研究以过磷酸为催化剂催化甲酸甲酯与三聚甲醛偶联合成乙醇酸甲酯。通过对以过磷酸、浓硫酸及过磷酸与浓硫酸混合酸为催化剂时反应现象、乙醇酸甲酯及甲氧基乙酸甲酯总产率等的对比研究,发现过磷酸具有良好的催化性,产品产率高达59 06%,催化效果较常用的浓硫酸强,但选择性不如浓硫酸。

关键词：过磷酸甲酸甲酯三聚甲醛乙醇酸甲酯

The Failure Analysis of Radiation Tube for Heater of 200000t/a Propane De-bitumen Equipment

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The Failure Analysis of Radiation Tube for Heater of 200000t...

china International Corrosion Control Conference ’99

作者： Li Yanlin Guo Hongwei Kelamayi Petrochemical Factory Xin Jiang china 834003

＜正＞The failure of radiation tube for heater of 200000t/a propane de-bitumen equipment was taken place in 25/09/96 by a suddenly tongue of flame when just working again after *** workers bum, heater out of shape and some of meters broken were caused by the failure. The investigated results showed that cracks or strength lowed caused by the decrease of tube thickness because of corrosion lead to the leaking of propane was the mainly reason of the *** corrosion medium was naphthenic acid and high temperature *** can be verified that the combined corrosion of the two medium take place at temperature 220～400℃.The first reason is the naphthenic acid corrosion,the second reason is high temperature sulphur corrosion because the temperature of tube is about 350℃ at most *** was taken place in inner of tube and can be continued because corrosion production dissolves in oil. The calculated results showed that the maxium corrosion rate can be reached to 1.0mm/*** repaired ways were made based on the analysis results mentioned above and technique procedure in order to resistant the failure taken place again and Keep the heater running normally and safe production.

关键词：

Development of reference standard for interferon α2a （IFNα2a） protein content determination

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Development of reference standard for interferon α2a （IFN...

2010年中国药学大会暨第十届中国药师周

作者： GAO Kai 1,RAO Chun-ming 1,TAO Lei 1,HAN Chun-mei 1,SHI Xin-chang 1,YANG Mei-hua 2,WANG Jun-zhi 1(1 National Institute for the Control of Pharmaceutical and Biological Products,No.2,Tiantan Xili,Beijing,100050,P.R. china. 2 Xiamen AMOYTOP Biotech co. LTD,No.330 Wengjiao Road,Xinyang industry Zone of Haicang,Xiamen,Fujian,361022,P.R.china. §Author contributed equally to this work.)

Objective: Protein content determination is one of the most important quality control aspects for biotherapeutics, for instance Interferonα2a （IFNα2a）. The accuracy of protein content determination provides not only the quality control base for specific activity and filling of the biotherapeutics, but also an important reference data for stability evaluation, residual impurities control and other physiochemical properties identification. Currently, commercially available kits for total protein content determination provide bovine or human serum albumin as assay standard substance. However, systematic errors will be introduced to the test results inevitably due to the differences in amino acid composition between IFNα2a and serum albumin standard substance. Although some of the manufactures applied IFNα 2a itself as reference substance for protein content determination in the internal release control, the traceability background is not clear for the assigned protein content-they could not explain how they assigned protein content for the first batch of internal reference substance exactly. Recent years with the booming of the similar biotherapeutic products （SBP） including IFNα2a, more and more guidelines and regulations require a head to head thoroughly comparative study between similar biotherapeutic products （SBP） and reference biotherapeutic product （RBP）. Therefore, to develop a homogeneous standard substance for IFN α 2a protein content determination with clear traceability background will contribute to the IFNα2a quality control as well as the head to head comparative study. Method and Results: We carried out comprehensive quality control on one batch of rHuIFNα2a raw material provided by a Chinese manufacture, and all results comply with the requirements of Interferon alfa-2 concentrated solution monograph embodied in European Pharmacopoeia 6.0. Since Kjeldahl method consumes high concentration samples in large quantity, following strategy was applied. Firstl

关键词： interferon α2a (IFNα2a) protein content determination reference standard Kjeldahl method high performace liquid chromatography(HPLC)

Progress in Innocuous Treatment Methods of High-Boiling Residues Formed in the Synthesis of Methylchlorosilanes

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Progress in Innocuous Treatment Methods of High-Boiling Resi...

2011 IEEE International Conference on Waste Recycling,Ecology and Environment(ICWREE 2011)

作者： Jianlong LI*, Yang GAO Qingdao University of Science and Technology, Qingdao, P.R. china

In the direct synthesis of methylchlorosilanes, a series of complex by-products are formed, whichcomprises 7 weight percent of high-boiling residues(HBR).The commercial value of HBR is low, consequentlylarge inventories of residues have been built up by thesilicone industry. This inventory poses a serious problemfor it represents an expensive, relatively useless *** continued accumulation of the residue posesa storage problem. Catalytic cleavage, which converts Si-Sibond contained compounds in HBR to methylchlorosilanes,is a promising innocuous treatment technology. However,industrial applications of traditional catalysts such asLewis acid or organic amine have limitations. Recently,with the development of mesoporous materials, kinds ofnew catalysts have been applied to increase the conversionrate and the selectivity of dimethyldichlorosilane. Othercompounds could not be treated by catalytic cleavage, areconverted to variety of organosilicon products by multipleways. In this paper progress in the innocuous treatmenttechnology of HBR were reviewed. In addition a newmethod using HBR for plastic filler was introduced.

关键词： organosilicon high-boiling residues catalyticcleavage innocuous treatment plastic filler

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氯乙酸灼伤中毒及其肌肉超微结构改变

中国职业医学 2006年第4期33卷 249-251页

作者：张春英田宝祥谭永祥高维昌杨雄蔺海龙张克川吉化集团公司总医院北华大学第二临床学院化研室吉林吉林132022

目的探索氯乙酸灼伤创面与时限关系及其肌肉的超微结构改变。方法实验观察60只大白鼠(分3组)不同性质灼(烫)伤创面变化,120只大白鼠(分6组)氯乙酸灼伤创面累及进程及其肌肉的超微结构;结合91例氯乙酸灼伤病例和现场调查资料进行研究分... 详细信息

目的探索氯乙酸灼伤创面与时限关系及其肌肉的超微结构改变。方法实验观察60只大白鼠(分3组)不同性质灼(烫)伤创面变化,120只大白鼠(分6组)氯乙酸灼伤创面累及进程及其肌肉的超微结构;结合91例氯乙酸灼伤病例和现场调查资料进行研究分析。结果相同灼(烫)伤深度,氯乙酸灼伤比烫伤或硫酸灼伤累及组织要深;随时间延长创面会加深且吸收中毒,并引起肌肉超微结构改变。91例氯乙酸灼伤病例有2例死亡,占2.2%,而且面积不大。1例截除趾末节。3例均为创面冲洗有延误、不彻底所致。结论氯乙酸灼伤有别于其他灼(烫)伤,呈进行性损害且吸收中毒,并致线粒体坏死。立即持续冲洗是减轻创面加深,减少或避免中毒的有效措施。

关键词：灼伤氯乙酸肌肉超微结构

ISOLATION AND FRACTIONATION OF HEMICELLULOSES FROM SALIX PSAMMOPHILA

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ISOLATION AND FRACTIONATION OF HEMICELLULOSES FROM SALIX PSA...

第十六届木材、纤维及制浆化学国际会议

作者： Feng Peng~(1,2),Ning Jia~1,Jing Bian~1,Pai Peng~2, Feng Xu~1,and Runcang Sun~(1,2*) 1.Institute of Biomass Chemistry and Technology,Beijing Forestry University,Beijing 100083,china 2.State Key Laboratory of Pulp and Paper Engineering, South china University of Technology,Guangzhou 510640,china.

Water- and alkali-soluble hemicelluloses were isolated with hot water and 10%KOH at 25 CC from dewaxed and delignified Salix psammophila,*** alkali-soluble hemicelluloses were then successively sub-fractioned by neutralization and graded precipitation at final ethanol concentrations of 15%,30%,45%,60%,75%and 90%, *** composition,physico-chemical properties,and structures of eight precipitated hemicellulosic fractions were elucidated by a combination of sugar analysis,molecular determination,FT-IR,H,C 2D HSQC *** was found that water-soluble hemicelluloses were more branched,and had low molecular weights（6060 g/mol）,whereas the alkali-soluble hemicelluloses were less branched,and had high molecular weights（17110-85540 g/mol）,in which xylose and uronic acid are the main sugar *** addition,the less branched hemicelluloses with large molecules were precipitated in lower ethanol percentages,while with the increasing ethanol concentrations,more branched hemicelluloses with low molecular weights were obtained. That is,linear hemicelluloses could be recovered at lower ethanol concentrations,and more branched hemicelluloses could be obtained at the higher ethanol concentrations. Based on the FT-IR,H,C and 2D HSQC NMR studies, the alkali-soluble hemicelluloses had a main structure composed of the（1→4）-linked β-D-xylopyranosyl backbone with 4-O-methyl-α-D-glucuronic acid attached to O-2 of the xylose residues.

关键词： Salix psammophila hemicelluloses alkali fractionation xylans