平衡转化率
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计算结果表明:在相同反应条件下,二氧化碳加氢合成二甲醚反应较二氧化碳加氢合成甲醇反应具有更高的CO2平衡转化率;
The results show that CO 2 equilibrium conversion rate of dimethyl ether synthesis is higher than that of methanol synthesis in the same reaction conditions .
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用统计力学方法对无机叠氮化物慢速热分解中的两步重要反应进行了研究,求得了反应平衡转化率α随温度T和压力P变化的表达式,并对反应机理作了分析和探讨。
Two important steps of slow thermal decomposition of azides have been studied using the method of statistical mechanics . Relations of the transform - ratio (α) of reactional equilibrium to temperature and pressure are formalized and the reaction mechanism is briefly discussed .
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结果表明,CO2平衡转化率随温度的升高而下降,增大反应体系的压力和采用高的氢碳比,对提高CO2平衡转化率有利。
The results show that the equilibrium conversion rate of CO2 decreases with increasing temperature , decreasing pressure and the ratio of n ( H2 ) / n ( CO2 ) in the reaction gas .
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假定各反应物以反应的摩尔计量比参加反应、反应物的总量均为1mol,求出了各反应中CO2的平衡转化率。
On the assumption that the reactions of CO2 and H2 are in stoichiometric ratio and the amount of whole reactants is one mole , the equilibrium conversions of CO2 are obtained .
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乙苯C02脱氢工艺(CO2-EBDH)能大幅度降低能耗,提高反应平衡转化率,并提供C02新的利用途径。
The process of ethylbenzene dehydrogenation in the presence of CO2 ( CO2-EBDH ) could reduce the energy consumption , improve the equilibrium conversion and provide a new approach for CO2 utilization .
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底物初始浓度高,最终平衡转化率低。
Substrate has high initial concentration but low final equilibrium conversion .
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合成气合成二甲醚平衡转化率及选择率计算模型
Calculation of equilibrium conversion and selectivity for dimethyl ether synthesis from syngas
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为非水相脂肪酶催化体系建立理论预测产物平衡转化率的数学模型提供了必要的参数。
The essential parameters were determined for predicting equilibrium conversion for lipase-catalysis reaction systems in organic solvent .
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低温和高压有利于提高碳的平衡转化率和甲醇的浓度。
Lower temperature and higher pressure favored the promotion of carbon equilibrium conversion rate and methanol concentration .
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癸酸和油酸分别在50℃和60℃下获得最高平衡转化率。
Maximum initial reaction rate was obtained at 50 ℃ for capric acid and 60 ℃ for oleic glyceride synthesis .
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添加葡萄糖对反应影响不大,添加吐温-80使反应的平衡转化率由72.15%增加至75.06%,添加剂对酵母选择性几乎没有影响。
Tween-80 can enhance the conversion from 72.15 % to 75 . 06 % and also does not influence ee % .
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但是由于该反应平衡转化率等方面的影响,仍然不能达到理想的结果。
However , the equipment conversion of hydrogen chloride is not reach an ideal result because of the limit of chemical equilibrium .
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对煤基合成气一步法制二甲醚反应体系的平衡转化率及甲醇合成反应与甲醇脱水反应的协同效应进行了研究。
Equilibrium conversion and synergistic effect between the methanol synthesis and methanol dehydration for the direct synthesis of dimethyl ether from coal-based syngas was studied .
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结果表明:该反应为放热反应,其吉布斯自由能变化为负值,2,6-二异丙基苯酚可望得到较高的平衡转化率。
The results show that this reaction is exothermic , and the reaction △ G is negative , and high equilibrium conversion x of2,6-diisopropylphenol is expectable .
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结果表明:(1)随温度的升高,甲苯与三甲苯的芳烃平衡转化率降低,二甲苯的平衡选择率亦降低;
The results show that as the temperature increases , the equilibrium conversions of toluene and trimethylbenzene decrease , and the equilibrium selectivity of xylene decreases as well .
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在开口反应器中,加酶量100u/g,50℃下癸酸最高平衡转化率为90%,移去水的方法不同对最终转化率影响很大。
The conversion of capric acid was 90 % by adding 100u / g of lipase in opened batch reactor at 50 ℃ . The final conversion was greatly influenced by the methods to remove water .
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当水/噻吩摩尔进料比大于4时,噻吩平衡转化率达100%,温度、压力、进料比对平衡组成的影响很小。
Complete conversion of thiophene could be achieved when the molar ratio of water to thiophene was greater than 4 . Temperature , pressure and feed ratio had little effect on the equilibrium composition under this condition .
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结果表明微乳液聚合没有常规乳液聚合的恒速反应期,在较高温度下,反应迅速进入快速反应阶段,达到一定转化率后又快速下降并趋于平衡转化率。
The results showed that microemulsion polymerization did not have any constant reaction rate period as was observed in conventional emulsion polymerization . The polymerization reaction rate increased immediately , entering a fast reaction stage then decreased quickly after reaching a certain conversion , and finally approached equilibrium conversion .
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对甲醇氧化羰基化合成DMC的过程进行了热力学分析。着重计算了合成反应的平衡常数和平衡转化率。
A thermodynamic analysis of synthesis process of DMC by oxidation carbonylation of methanol was carried out with the emphasis on calculations of equilibrium constants and conversions for the reaction .
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采用非线性单纯形算法,对直流法克劳斯硫磺回收工艺相关的热力学图表关系曲线进行了拟合,用VB语言编写计算机程序,可用于计算克劳斯工艺的平衡组成,硫磺转化率,设备热负荷以及火焰温度。
According to the non-linear simplex method , the relevant thermodynamics graph relation curves have carried on the fitting and programming the computer program . This model can be used for calculating the equilibrium composition of claus process , sulfur conversion ratio , the equipment heat load and flame temperature .
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通过研究吉布斯自由能、化学平衡常数及平衡转化率的变化,对加氢气化炉内主、次化学反应进行了系统的热力学分析。
Detailed thermodynamic based analysis was presented for the chemical reactions in a hydrogasifier through the analysis of Gibbs free energy , chemical equilibrium constant and the equilibrium conversion rate .
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对甲苯歧化与三甲苯烷基转移反应体系中不同温度和进料条件下的平衡组成、平衡转化率、平衡选择率进行了详细计算。
The reaction system of toluene disproportionation and trimethylbenzene transalkylation is a complex system for xylene preparation . In this paper , the equilibrium compositions of the products in this reaction system were carefully calculated and the equilibrium compositions at different temperatures and different feed compositions were analysed .
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该工艺受到热力学平衡的限制,平衡转化率低,同时消耗大量能量,成本较高。
However , this process is limited by the thermodynamic equilibrium and have low equilibrium conversions of ethylbenzene . At the same time this process consumes too much energy and leads to high cost .
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本论文还计算了反应气在不同温度(270~300℃)下的平衡组成、CO的平衡转化率及二甲醚的平衡选择性和平衡收率等热力学数据,并与实验数据进行对比。
The thermodynamics data in different temperature , such as equilibrium composing , the convert rate of CO , the selectivity and yield of DME , were all founded .
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计算出不同温度下反应的化学平衡常数及温度、压力、原料配比对乙酸平衡转化率X的影响。
The chemical equilibrium constant at different temperatures , and the effects of temperaturatio on equilibrium conversion X of acetic acid are calculated .
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利用反应过程中水分的质量物料平衡以及物质守恒定律,建立了理论预测葡萄糖酯平衡转化率的数学模型。
A mathematic model was proposed on the base of the mass balance of water and the law of mass action for predicting the equilibrium conversion ratio for the synthesis of lauroyl glucose ester .
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本文对2-甲基-2,5-二甲氧基-2,5-二氢呋喃的水解平衡进行了初步研究,测定了水解平衡常数,为选择合适的水解反应条件,提高平衡转化率提供了理论依据。
The preliminary study of the hydrolytic equilibrium of 2-methyl-2,5-dimethoxy-2,5-dihydrofuran was reported in this paper . The hydrolytic equilibrium constant was determined . The study has been provided theoretical basis for selection of suitable hydrolytic reaction conditions and for raising equilibrium conversion per pass .