酯化反应
- 名esterification
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研究了Fmoc-Asn(Trt)-OH与Wang树脂的酯化反应工艺。
The esterification process of Fmoc-Asn ( Trt ) - OH and Wang resin was studied by solid phase synthesis .
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没食子酸与葡萄糖的酯化反应研究
The esterification between gallic acid and glucose
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pH值对淀粉酯化反应的影响
Influences of pH on esterification of starch
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化学法合成维生素E基本都采用异植物醇与2,3,5-三甲基氢醌经缩合、酯化反应来合成。
Absract : Isophytol and2,3,5-trimethylhydroquinone are basic raw materials in the chemical synthesis of Vitamin E.
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PET酯化反应过程中的二甘醇生成
Formation of DEG in PET esterification process
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添加少量的18Crown6能提高酯化反应速率和对映体选择性;
A small amount of 18_Crown_6 could increase both the esterification rate and the enantioselectivity .
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固体超强酸SO4~(2-)/Fe2O3催化N,N-二乙氨基乙醇与含芳香环的羧酸的酯化反应
Solid Superacid SO ~ ( 2 - ) _4 / Fe_2O_3 Catalyzed Esterification of N , N-Diethylaminoethanol with Aromatic Carboxylic Acids
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以分子组份为对象的PTA间歇酯化反应模拟
A simulation of PTA batch esterification based on molecular species
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TPA和EG连续生产PET的第一酯化反应器操作模拟
A mathematical model for R1 reactor simulation of a continuous esterification process between TPA and EG
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酯化反应时间2h,反应温度90℃;
Esterification reaction time , 2h ; temperature , 90 ℃;
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XRD分析表明,酯化反应主要发生在淀粉分子非晶区,在结晶区也有一定程度的反应;
The XRD results indicate that the esterification of starch mainly occurs in the amorphous region and less in the crystalline region .
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PTT直接酯化反应动力学研究
Study on Kinetics of PTT Direct Esterification Reaction
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无水CaCl2-浓HCl催化酯化反应研究
Study on esterification with anhydrous CaCl_2 and HCl as catalyst
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SO4~(2-)/Fe2O3超强酸催化剂的制备及其对乙酸/丁醇酯化反应的催化作用
Preparation of so_4 ~ ( 2 - ) / fe_2o_3 super-acid catalyst and its catalytic action on esterification of ch_3cooh / c_4h_9oh
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H3(PW(12)O(40))/PVA催化膜用于酯化反应的研究
Study of H 3 ( PW 12 O 40 ) / PVA Catalytic Membrane Tested with an Esterification Reaction Mixture
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以松香为基本原料,通过DA加成反应,合成了丙烯酸改性松香,继而与环氧氯丙烷进行酯化反应、闭环反应,合成了丙烯酸改性松香基环氧树脂。
Acrylic modified rosin type epoxy resin was synthesized by esterification and ring closing reaction of acrylic modified rosin with excessive epichlorohydrin .
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探讨了酯化反应及光聚合机理,用SEM和IR表征了树脂体系的固化结构和固化度。
The mechanism of esterification and photopolymerization are discussed , curing structure and photopolymerisable degree of the architecture are characterized by SEM and IR , respectively .
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多元羧酸与纤维素酯化反应中NaH2PO2的催化作用
Catalytic effect of nah_2po_2 in esterification of cellulose by polycarboxylic acid
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Fe2(SO4)3·xH2O催化酯化反应及其在酯内残留的研究
Study on the Esterification Catalyzed by Fe_2 ( SO_4 )· xH_2O Catalyst and the Remains of the Catalyst in Ester Products
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Yb(NTf2)3催化苯甲酸酯化反应
Esterifications of Benzoic Acid with Alcohols over Yb ( NTf_2 ) _3
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ZrO2/SO4~(2-)固体超强酸催化剂研究(Ⅰ)&酸性和酯化反应
Studies on the ZrO_2 / SO_4 ~ ( 2 - ) Solid Superacid Catalysts (ⅰ)── Acidity and Esterification Reaction
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测得的液相和汽-液相酯化反应的活化能分别为49.4kJ/mol和54.4kJ/mol。
Measured activation energy for esterification reaction in liquid phase and vapour-liquid phase are 49.4 kJ / mol and 54.4 kJ / mol respectively .
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系统研究了有机介质、助溶剂及添加剂对脂肪酶Novozym435(CandidaAntarcticalipaseB)催化的Ketoprofen的对映体选择性酯化反应的影响。
The effect of reaction media , cosolvent and additives on candida antarctica lipase B ( Novozym 435 ) _catalyzed enantioselective esterification of ketoprofen was systematically exp_lored .
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DBSA微乳液中醛的氧化酯化反应的研究
DBSA Catalyzed Oxidative of Aldehydes to Esters in Microemulsion
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第三步:由GM与磷酸化试剂五氧化二磷进行磷酸酯化反应,而后水解、碱中和,即制得终产物聚醚改性硅氧烷磷酸酯盐(PK)。
The last step was that GM was phosphated by phosphating agent-phosphorous pentoxide ( P205 ), then hydrolysised , basic neutralized to obtain the final products-PK .
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以大豆油脚为原料,采用酯化反应和超临界CO2萃取方法,进行了天然VE的提取研究。
Taking the soybean oil dreg as the raw material , using the method of esterification reaction and supercritical CO2 extracting , we carry through the research of extraction of natural VE .
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研究了聚(β-氯乙基缩水甘油醚)的酯化反应动力学,并通过~1HNMR和IR光谱确立了酯化度的计算关系式。
Moreover , the kinetic of esterification of the poly (β - chloroethyl glycidyl ether ) was studied , and the calculation formula of esterification degree by 1H NMR and IR spectroscopy was established .
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以Candidaantarctic脂肪酶(CAL)为催化剂,对无溶剂微水体系中癸酸与甘油酯化反应的热力学平衡和动力学行为进行研究。
Kinetic behavior and apparent thermodynamics equation of esterification of glycerol with capric acid by using lipase from candida antarctic ( CAL ) were studied .
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通过红外光谱分析表明:在合成反应阶段,TDI中的-NCO基团与羟基硅油中的-OH基团发生了酯化反应。
Through the infrared spectrum : a synthesis phase , TDI-NCO groups in the silicone oil with hydroxyl-OH groups in the occurrence of the esterification reaction .
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以SO2-4/TiO2型固体超强酸为催化剂,在固定床反应器上,通过连续法考察了乙酸与乙醇酯化反应的情况。
The reaction of acetic acid with ethanol was studied in fixed bed micro reactor by continuous process under the catalyst of SO 2 - 4 / TiO 2 type solid super acid .