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1)  decyclization [di:,saiklai'zeiʃən]
脱环
2)  cyclodehydration [,saiklədi:hai'dreiʃen]
脱水环化
1.
The catalytic performance of mineral acids for the synthesis of 1 , 4-dioxane by cyclodehydration of DEG was studied.
考察了无机酸对二甘醇(DEG)脱水环化制备1,4-二氧六环(DOX)反应的催化效果。
3)  cyclodehydration [,saiklədi:hai'dreiʃen]
环化脱水
1.
As to the supported catalysts of silicotungstic acid (HWSi) for cyclodehydration of 1,4-butancdiol to prepare tetrahyfrofuran, the effects of the kinds of carriers, the acidities, the acid contents and the combination ability between HWSi and supporters were investigated.
研究了负载型硅钨酸催化剂的载体种类、酸强度、酸量、硅钨酸与载体的结合能力对其催化1,4-丁二醇环化脱水制备四氢呋喃的影响。
2.
The method of liquid phase synthesis of dioxane from the cyclodehydration of diethylene glycol catalyzed by ASP-type solid acidic catalysts was studied.
研究了ASP型固体酸催化剂一缩乙二醇(二甘醇)环化脱水合成1,4-二氧六环的液相反应。
4)  dehydrocyclization [di:,haidrəsaikli'zeiʃən]
脱氢环化
1.
Study on Dehydrocyclization and Aromatization Process over ZnHZSM 5 Catalyst;
ZnHZSM-5上脱氢环化芳构化过程的探讨
2.
Effect of Potassium Promoters on Catalytic Performance of Copper Aluminum Borate for Dehydrocyclization of o-Ethylaniline;
钾助剂对硼铝酸铜催化脱氢环化性能的影响
5)  dehydration [英][,di:hai'dreiʃən]  [美][,dihaɪ'dreʃən]
脱水环化
1.
The catalysts of 1,4-butanediol dehydration for producing tetrahydrofuran are studied,It is found that heteropoly acid,immersing heteropoly acid carrier and Y,β,ZSM-5 zeolite all have high activities.
考察了 1,4-丁二醇液相脱水环化制四氢呋喃的催化剂 ,发现杂多酸或负载型杂多酸及Y、β、ZSM - 5型分子筛均具有很高活性 ,经催化剂稳定性试验 ,表明每克催化剂可处理原料 35 0 0 0g以上 ,原料转化率 10 0 %(mol) ,四氢呋喃选择性≥ 99% (mol)。
2.
H-Y zeolite?χ-Al 2O 3 used in 1,4-butanediol dehydration for producing tetrahydrofuran,and the vaporizing and reaction conditions have been studied.
考察了 1,4-丁二醇气相脱水环化制四氢呋喃的几种催化剂H -Y分子筛、 χ -氧化铝以及汽化和反应工艺条件。
6)  removal of naphthenic acid
脱环烷酸
1.
Progress of the removal of naphthenic acid from heavy sour crude and its fraction is reviewed.
综述了从重质高酸值原油及其油品脱环烷酸的工艺研究。
补充资料:脱环法
分子式:
CAS号:

性质:亦称脱环法,环法等。一种测定液体表面张力的方法。由于Du Noüy首先用扭力天平测量拉力,故也常称为Du Nouy法。将一可被待测液体润湿的金属圆环置于液面上,向上拉动圆环,测量圆环脱离液面时之最大拉力P。P应等于拉起液体的重量mg(m为拉起液体质量,g为重力加速度常数),且与液体表面张力γ,圆环的平均半径R有关。R为圆环半径R和圆环金属丝半径r之和。γ=F·P/(4πR)。校正因子F是R/γ和R3/V的函数。V为拉起液体的体积,可自P=mg=Vρg求出,ρ为液体密度。吊环法的影响因素很多,如环的水平程度、接触角的存在、容器的大小等。

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