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对羟基苯乙基甲醚废水的试验研究 总被引:2,自引:0,他引:2
采用铁炭床-Fenton氧化法对含高浓度盐类和难降解有机物的对羟基苯乙基甲醚废水进行处理试验研究。着重研究了铁炭床-Fenton氧化法的控制条件,并对各种高级氧化法的处理效果进行了比较。试验结果表明,采用铁发床-Fenton氧化法并控制其反应条件,处理对羟基苯乙基甲醚废水是有效的。处理后排放水中COD可达5273mg/L,SO4^2-可达720mg/L,Cl^-可达2158mg/L,COD总去除率为96.3%,SO4^2-总去除率为98.6%,Cl^-总去除率为95.9%。 相似文献
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N—氰乙基—N—乙酰氧乙基苯胺合成研究 总被引:1,自引:0,他引:1
本文以N-氰乙基苯胺为原料,经常压N-烷化,N-酰化反应制取了N-氰乙基-N-乙酰氧乙基苯胺,并通过工业试生产,总收率达93.3%。 相似文献
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相转移催化剂苄基三乙基氯化铵合成2,4-二硝基苯甲醚的研究 总被引:2,自引:0,他引:2
采用苄基三乙基氯化铵(TEBA)作为相转移催化剂(PTC)合成了2,4-二硝基苯甲醚,讨论了催化剂与2,4-二硝基氯苯质量比、反应温度和氢氧化钠投放速度对反应效果的影响,验证了TEBA对合成反应的催化作用,比较了不使用催化剂的情况。实验结果表明,TEBA能大大加快合成反应的进行,其合成的适宜条件为:温度56℃,催化剂与2,4-二硝基氯苯质量比为1∶100,氢氧化钠溶液投放时间为30 min。此外,采用红外光谱、高效液相色谱等方法表征了2,4-二硝基苯甲醚的结构和组成。 相似文献
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苯酚与1,2-二氯乙烷在相转移催化剂存在下反应制得β-氯乙基苯基醚,该化合物与十二烷二甲基胺发生季铵化反应制得十二烷基二甲基苯氧乙基氯化铵。通过性质试验及红外光谱分析初步验证了产品的结构。 相似文献
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Karen S. Coym Lindsay E. Roy Carmen E. Hernandez William E. Acree JR 《Chemical Engineering Communications》1997,162(1):215-222
Experimental solubilities are reported for anthracene dissolved in six binary mixtures containing 2-methoxyethyl ether with n-hexane, n-heptane, n-octane, cyclohexane, methyl-cyclohexane and 2,2,4-trimethylpentane at 298.15 K. Results of these measurements are used to test a mathematical representation based upon the combined Nearly Ideal Binary Solvent (NIBS)/Redlich-Kister model. For the six systems studied, the model was found to provide an accurate mathematical representation of the experimental results, with an overall average absolute deviation between measured and calculated values being on the order of 0.4 per cent or less. 相似文献
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研究了4-(2-甲氧基乙基)苯酚的合成工艺。改进了文献提出的工艺方法,初步解决了搅拌、异构体分离等方面存在的工艺问题;提出了一种新的、可供选择的还原方法;首次报道了各步反应的具体工艺参数。 相似文献
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介绍了N–(2–甲氧基乙基)对硝基苯胺(MENA)的应用与合成方法。通过分析得出,对硝基氯苯和2–甲氧基乙胺直接反应是工业化生产MENA的首选路线。 相似文献
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Lewis酸催化对甲氧乙基苯基缩水甘油醚与异丙胺的反应得到美托洛尔,考察不同的催化剂、反应温度、反应时间对反应的影响。结果表明:FeCl3对该反应有较好的催化性能,收率可达80%。 相似文献
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选用多种相转移催化剂,在不同条件下合成4-甲基苯基-2-氯乙烷,经甲氧基化后得到4-甲基苯基-2-甲氧基乙基醚。研究表明:以TEBA为催化剂,反应物的配比n(CH3C6H4OH):n(ClCH2CH2Cl):n(KOH)=1:3:1.4,反应8h后,4-甲基苯基-2-氯乙烷的产率可达64.71%。 相似文献
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James J. Spivey 《Chemical Engineering Communications》1991,110(1):123-142
Catalysts for the methanol/dimethyl ether reaction are reviewed with particular emphasis on the acid/base properties of the catalysts. The focus is on temperatues less than around 300°C and atmospheric pressure conditions, which correspond to potential automotive applications. Mechanisms including both dual site (acid/base) Langmiur-Hinshelwood and single site Rideal-Eley mechanisms have been postulated, with both Bronsted and Lewis acid sites involved in the dehydration reaction. Temperatures higher than about 300°C, as well as a strong surface acidity, tend to promote the further dehydration of DME to form C2-Q5 olefins and eventually hydrocarbon products in a series type reaction sequence. Methods exist, particularly in zeolites, to control the strength and type of surface acidity, and therefore the selectivity to DME. 相似文献
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Kento Fujiura Mitsuru Naito Yukiko Tanaka Masaru Tanaka Yurie Nakanishi Hirotaka Ejima Lumi Negishi Tomoya Kujirai Hitoshi Kurumizaka Seiichi Ohta Kanjiro Miyata 《应用聚合物科学杂志》2024,141(11):e55044
Poly(ethylene glycol) (PEG) modification, also known as PEGylation, has been extensively used to improve the stability of nanoparticles for nanomedical applications. However, PEG exhibits antigenicity in some formulations, motivating researchers to explore alternative polymers. Herein, poly(vinyl ether) (PVE) derivatives are highlighted as promising alternatives to PEG because they form intermediate water molecules that suppress non-specific protein adsorption and platelet adhesion to the material surface. We prepared a water-soluble PVE derivative, poly(2-methoxyethyl vinyl ether) (PMOVE), and utilized it as a surface modifier for gold nanoparticles (AuNPs) as model nanoparticles. PMOVE with a thiol terminus was synthesized and confirmed to form an intermediate water molecule using differential scanning calorimetry. Similar to the synthesis of PEGylated AuNPs (PEG-AuNPs), PMOVE-modified AuNPs (PMOVE-AuNPs) were successfully fabricated with an appreciably high density of PMOVE palisades via a thiol-gold coordination reaction. Similar to PEG-AuNPs, PMOVE-AuNPs showed reduced serum protein adsorption and prolonged blood circulation. Additionally, no significant cytotoxicity was observed after incubation of a murine macrophage cell line, RAW264.7, with PMOVE-AuNPs. Our results indicate that the PMOVE modification increases the stealthiness of nanoparticles that is equivalent to that achieved by PEGylation. 相似文献