| Thesis Name：The study and application on new craft of producin |
| Country：[CN] |
Usage：[new craft of producing ink roll cleaner] |
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The study and application on new craft of producing ink roll cleaner
PAN Yong-cai，PAN Ying-ying
(Yongzhou Vocational Technical College，Yongzhou 425006, China)
Abstract：This paper discussed the new producing craft of ink roll cleaner,tough experimental, it showed that this product is not only fit for the clean of press ink roll, but also fit for all cooking utensils and installation with greasy dirt, such as fume extractor, exhaust fan, etc.. |
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| Thesis Name：Research of assisting washing performance of sodiu |
| Country：[CN] |
Usage：[assisting washing performance] |
| Remarks： |
Abstract：As a phosphorusfree washing assistant, sodium silicate's performance draws keen attention in assisting washing. This article studies its abilities in astricting Ca2+ and Mg2+, buffering pH value, antiprecipitation of calcium carbonate and decontamination. Meanwhile, its effects are compared with those of STPP. It is proved that all kinds of sodium silicates have their own advantages and disadvantages respectively in experiments. Its comprehensive performance is not satisfying enough to replace STPP if used alone. However, if applied together with relevant macromolecule polymers, sodium silicate can be employed as a major assistant in compound scours.
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| Thesis Name：Study on synthesis of fastsolving polyacrylamide |
| Country：[CN] |
Usage：[synthesis and application] |
| Remarks： |
Study on synthesis of fastsolving polyacrylamide and application
WANG Guang-hua1，LI Wen-bing1,2
(1.College of Chemical Engineering,Resources & Environment,WUST, Wuhan 430081,China；
(2.School of Life Science & Technology,Huazhong University of Science and Technology, Wuhan 430074， China)
Abstract：The fast-solving polyacrylamide(PAM) was prepared by microemulsion polymerization, and the reason of fastsolving was also analysed. The properties of these three PAMs were studied,that were used to treat suspendings and COD of the waste water. The results showed that the dissolvability of labPAM was better than the other two products and the dissolution time was up to 5.5min.In addition,the suspending removal effect of labPAM was equal or better than that of France PAM,and obviously exceeded that of homegrown PAM,especially the suspending removal percentage was 98% in waste water of pudding plant.The lab-PAM could substitute the France PAM in treating steel waste water. It was not ideal to remove COD of effluent via adding these three PAMs products.
Key words：polyacrylamide;microemulsion;flocculating agent;effluent treatment
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| Thesis Name：Study on the reduction reaction of p-nitrophenylac |
| Country：[CN] |
Usage：[the reduction reaction] |
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Study on the reduction reaction of p-nitrophenylacetic acid
ZHANG Cui-e, CHEN Xing-quan, LIU Hong
(Xi'an Modern Chemistry Research Institute, Xi'an 710065， China)
Abstract：This paper reports four reduction methods of p-nitrophenylacetic acid which are the reduction using iron powder in acid or alkaline medium, hydrogen transfer reduction using Pd/C as catalyst and catalysis hydrogenation using raney Ni. The yield of these reactions is 85.3% , 92.9% , 86.0% and 82.9% respectively. The product purity is all over 98％ . We provide a tentative idea for realizing industrial production of this product from the comparison of raw material cost, product quality, simple work up, protect the environment against pollution and so on in the four methods.
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| Thesis Name：Study on properties ELS abluent |
| Country：[CN] |
Usage：[abluent] |
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Study on properties ELS abluent
ZHU Rong-xia, NA Jing-yan
(The Engineer Institute, Air Force Engineering University， Xi'an 710038， China)
Abstract：Using ELS abluent react with copper, the result is studied that the copper can be eliminated with ELS abluent. According to many experiments, it is proved that the cleaning result more increase in ELS than in kerosene; ELS abluent have a certain result when ELS abluent's temperature is under 0℃. There is the best cleaning result in 10 hours and hardly in 120 hours， mean while ELS detergent doesn't corrode cannon's bore material.
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| Thesis Name：Extraction of natural alkannin |
| Country：[CN] |
Usage：[Extraction] |
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Extraction of natural alkannin
HUO Wen-lan
(Department of Chemistry,Yulin College,Yulin 719000， China)
Abstract：The process of extracting alkannin is described. Such as characteristics dissolution, stability and sensibility to medium are also tested. It showed that natural alkannin has a bright market prospect and development value.
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| Thesis Name：Catalytic synthesis of propyl propionate with soli |
| Country：[CN] |
Usage：[Catalytic synthesis] |
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Catalytic synthesis of propyl propionate with solid super acid SO2-4/Fe2O3
ZHAO Yan-ping，LI Shu-qin
(Department of Chemistry and Biology Science Engineering ,Xiangfan University, Xiangfan 441053， China)
Abstract：Synthesis of propel propionate from n-propyl alcohol and propane acid and solid super acid SO2-4/Fe2O3 as catalyst instead of sulphuric acid have been studied, the synthesis of catalyst and the condition of the synthesis of propyl propionate. The results showed that solid super acid SO2-4/Fe2O3 not only reduce the corrosion of the equipment. but also has good catalytic activity. The optimal conditions were (for 0.1 mol of propane acid) using 1.0 g of catalyst,the molar ratios of alcohol to acid was 2.5∶1, the reaction time was 3.0 h,the yield of esterification may up to 97.2%.
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| Thesis Name：Study on catalytic synthesis of p-hydroxybenzoate |
| Country：[CN] |
Usage：[Scientific research] |
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Study on catalytic synthesis of p-hydroxybenzoate
YAO Chun-feng，ZHAO Gui-lan，GAO Zhi-hong
(Department of Chemisty,South China Normal University,Guangzhou 510631， China)
Abstract：The synthesis of butyl p-hydroxybenzoate with ferric chloride as catalysts was studied. the effects of reaction conditions were investigated ,the optimum were determined as follows:the molar ratio of p-hydroxybenzoic acid to butanol is 1∶3,the molar ratio catalyst to p-hydroxybenzoic acid is 0.04∶1,the reaction time is 2.0 h,the yield of butyl p-hydroxybenzoate is 98.9%.
Key words：butyl p-hydroxybenzoate; ferric chloride; catalysis; synthesis
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| Thesis Name：Study on stability of hydrophobic |
| Country：[CN] |
Usage：[scientific research] |
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Abstract：The stability in a high temperature of hydrophobically associating polyacrylamide in simulated Shengli brine was investigated by measuring its viscosity. The experiment results showed that the viscosity of polymer in solution decreased very fast, thiourea and micromolecule-alcohol can enhance the stability of polymer solution. Thiourea can keep polymer solution steady well as antioxygen. And micromolecule-alcohol can associate with polymer, which maintains the network structure of polymer. Thiourea and multi-hydroxyl compound with the certain proportion combines the virtue of these two substance, which increases the long-time stability of polymer solution to a great extent. And the proper proportion is 1∶5 and the proper addition is 100 mg/L.
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| Thesis Name：Hydrochloric acid deposition method of producing n |
| Country：[CN] |
Usage：[scientific research] |
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Hydrochloric acid deposition method of producing nano-silica aerogel
XU Ying， SHEN Yi
(Department of Material Engineering, Hebei Institute of Technology,Tangshan 063000，China)
Abstract：We chose hydrochloric acid precipitation method to prepare nano-silica aerogel and adjusted hydrochloric acid's concentration, the quantity of additive, the temperature of the reaction system, and pH-value. We analysised and researched silica aerogel's structure with XRD and SEM, obtained silica aerogel product with small particle size and good character.
Key words： silica aerogel; hydrochloric acid; precipitation
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