噻吩衍生物的吸附能顺序依次为,4,6-二甲基二苯并噻吩<二苯并噻吩<噻吩<苯并噻吩,与实验结果相近。
The calculated adsorption energy of the thiophenic compounds increased as 4, 6-DMDBT< DBT< TP< BT, which agrees with the experiment.
研究了在钛材反应器中液相空气氧化3,3',4,4'-四甲基二苯乙烷制备3,3',4,4'-二苯甲酮四羧酸的反应规律。
The synthesis of 3,3 , 4,4 -benzophenone tetracarboxylic acid by liquid phase air oxidation of 1,1-bis(3,4-dimethylphenyl)ethane in titanium reactor was studied.
研究了镇肾平对二甲基苯并蒽诱导的叙利亚仓鼠口腔癌变的预防作用。
The preventive effects of zhenshenping on dimethyl benzanthracene induced oral carcinogenesis in syrian golden hamster were studied.
气味来源:壬烷,邻苯二甲酸脂,正丁醛,二甲基砜,吲哚
我们知道许多有毒化学物品对大脑的发育都有影响,这包括铅、甲基汞、多氯联苯、有机磷杀虫剂、阻燃剂和领苯二甲酸盐。
We know that plenty of toxic chemicals are harmful to developing brains—including lead, methylmercury, PCBs, organophosphate pesticides, flame retardants (PBDEs) and phthalates.
报道了以烷基苯磺酸甲酯催化异构亚磷酸三甲酯合成甲基膦酸二甲酯。
The synthesizing of dimethyl methyl phosphonic acid ester with trimethyl phosphite was catalyzed by methyl alkylbenzenesulfonate.
当以甲基磺酸锌为催化剂时,苯甲醛缩乙二醇的收率可达87.7%。
The yield of benzaldehyde glycol acetal was above 87.7% with zinc methanesulfonate as catalyst.
采用微波辐射技术,以苯酚、氢氧化钾和氯化苄为原料,N, N -二甲基甲酰胺为溶剂合成了苄苯醚。
Using phenol and benzyl chloride as raw materials and n, N-dimethyl formamide (DMF) as solvent, benzyl phenyl ether was synthesized under microwave radiation.
它们是乙酸、苯甲醛、正葵酸、14-甲基十五烷酸甲酯、丙三醇、苯甲酸、6 ,9-十八碳二烯酸甲酯、角鲨烷、硬脂酸和二十烷基油酸酯。
They were acetic acid, benzaldehyde, n caproic acid, 14 methyl pentadecanoic methyl ester, glycerin, benzoic acid, 6,9 octadecadienoic methyl ester, squalane, stearic acid and oleic eicosyl ester.
十六烷二甲基苯氧乙基溴化铵的乳化能力、起泡力和泡沫稳定性都比较弱,具有一定的消泡和抑泡作用。
The emulsibility, producing bubble ability and the foam stability for PDPB are weaker, and it has definite effect on disappeared and restrained bubbles.
铜酞菁经酸溶后与仲甲醛、邻苯二甲酸亚胺反应,合成了邻苯二甲酸亚胺甲基铜酞菁。
Phthalmidomethyl copper phthalocyanine was synthesized, through reaction of cooper phthalocyanine which was dissolved by sulfuric acid, together with paraformaldehyde and phthalimide.
采用邻二甲苯和一氧化碳为原料、无水三氯化铝为催化剂,对3,5-二甲基苯甲醛的羰基化合成反应进行了研究。
A new method related to the carbonylating synthesis of 3,5-dimethylbenzaldehyde was studied using o-xylene and CO as the raw materials and anhydrous AlCl3 as the catalyst.
以二乙烯基苯为交联剂,由甲基丙烯酸甲酯、苯乙烯、甲基丙烯酸模型浇铸共聚,制得了一种交联型改性有机玻璃。
A kind of crosslinking modified organic glass was prepared by mold copolymerization of methyl methacrylate, styrene, methacrylic acid with divinylbenzene as crosslinking agent.
目的:研究增生平对二甲基苯并蒽(DMBA)诱发金黄地鼠口腔癌的预防作用。
Objecti The preventive effects of zhenshenping on dimethyl benzanthracene(DMBA)induced oral carcinogenesis in syrian golden hamster were studied.
本文以聚矾和磺化聚砜共混物为膜材料,二甲基乙酰胺为溶剂,聚乙烯吡咯啉酮和邻苯二甲酸二甲酯为添加剂配制纺丝液,纺制外压中空纤维超滤膜。
This paper reported the preparation of hollow fiber UF membrane, using PS and SPS as membrane spinning materials, DMA as solvent, PVPand dimethyl phthalate as additives.
论还了2,4-二氯-3,5-二硝基三氟甲基苯的合成方法;对影响收率的反应温度,反应时间和催化剂进行了研究。
This paper reported the synthetic method of 2, 4-dichloro-3, 5-dinitrotrifluorotoluene. The effect of temperature, time, and catalyst on yield were studied.
以复合离子聚合物、六次甲基四胺、间苯二酚为主要原料,制取复合离子聚合物调剖堵水剂。
The compound ion polymer in-depth profile adjusting and water plugging agent had been developed by compound ion polymer, urotropine, resorcin, ammonium chloride as mostly material.
以邻二甲苯为原料、苯甲酸盐为催化剂进行液相氧化,一步合成邻甲基苯甲腈。
One step synthesis of o methyl benzonitrile with o xylene as raw material and benzene carbonate as catalyst was carried out in liquid phase oxygenation.
与聚对苯撑二甲基聚合物相比引入乙酰基后聚合物的溶解性、介电常数和损耗因子均有所提高。
The solubility, dielectric constant, and dissipation factor of the polymer were improved alter acetyl substitution of poly (p-xylylene).
以溴代环己烷和苯甲酸乙酯为原料,经过两步反应合成了甲基丙烯酸二环己基苯甲酯。
With bromocyclohexane and ethyl benzoate as raw materials, dicyclohexylphenylmethyl methacrylate was synthesized by two steps.
二氢-2-甲基-4-苯基-1,5-苯并硫氮杂卓与重氮乙酸乙酯反应,得到非预期的分子内重排的开环产物。
From the reaction of 2,3 dihydro 2 methyl 4 phenyl 1,5 benzothiazepines with diazozcetic ester an unexpected ring open product of the intramolecular rearrangement was obtained.
用对二氯甲基苯作为后交联剂,与聚丙烯接枝苯乙烯-二乙烯苯纤维进行后交联反应,制备出具有高比表面积的后交联纤维。
The post-crosslinking fiber was prepared by cross-linking PP-ST-DVB fiber with p-xylylenedichloride according to the friedel-crafts reaction and was given a series of synthesis tests.
采用自行设计制造的重氮甲烷发生装置,有效控制了二甲基亚硝基苯磺酰胺的反应用量,减少了有害气体的排放。
By adopting the self-designed diazomethane generating device, the dosage of reaction reagent of diazald was effectively controlled and the harmful gas release was reduced.
本文以邻甲基苯胺、对氯苯胺、间三氟甲基苯胺和5-三氟甲基-1,3-苯二胺为单体,利用电化学方法,得到了上述苯胺衍生物的聚合物薄膜。
In this paper, polymer films were prepared with o-toluidine, p-chloroaniline, m-trifluoro methylaniline and 5-trifluoromethyl-1,3-diaminobenzene as monomer by electrochemical method.
清洁的胡椒基丁醚生产工艺的研究i, 5 -丙基- 1,3 -苯并二氧杂茂的氯甲基化废水的处理。
Studies on Environmentally Sound Technology for Producing Piperonyl Butoxide I. Treatment of Waste Water from Chloromethylation of 5-propyl-1, 3-benzodioxole.
采用离子色谱法同时测定合成药物中存在的四氟硼酸根、对甲基苯磺酸根、硫酸根、1,4-丁二磺酸根4种离子。
A new method of simultaneous separating and determining tetrafluoroborate, p-toluene sulphonic acid, sulfate radical and 1,4-Butanedisulfonie acid by ion chromatography was established.
以二氧杂环己烷为溶剂,通过聚乙二醇2 70与对甲基苯磺酰氯反应合成了1 8冠6,产率64 .4 %。
Also, in dioxane solution, 18Crown6 was prepared in 64.4% yields by reaction of polyethylene glycol 270 and ptoluenesulfonyl chloride.
标题化合物C24H22N2O2是由N-(4-羟基苯亚甲基)喹啉-5-胺和5,5-二甲基-1,3-环己二酮在氯化三乙基苄基铵(TEBAC)催化下以水作溶剂反应而得。
The title compound C24H22N2O2 has been synthesized by the reaction of N-arylidenenaphthalen-2-amine with 5,5-dimethyl-1,3-cyclohexadione water catalyzed by triethylbenzylammonium chlorideTEBAC.
标题化合物C24H22N2O2是由N-(4-羟基苯亚甲基)喹啉-5-胺和5,5-二甲基-1,3-环己二酮在氯化三乙基苄基铵(TEBAC)催化下以水作溶剂反应而得。
The title compound C24H22N2O2 has been synthesized by the reaction of N-arylidenenaphthalen-2-amine with 5,5-dimethyl-1,3-cyclohexadione water catalyzed by triethylbenzylammonium chlorideTEBAC.
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