TiO 2 and X Al 2O 3 Y TiO 2 Z SiO 2 coatings(X =0￣0.30, Y =0.25￣0.60, Z = 0.20 ￣0.65 molar fraction) with thickness of 50￣90nm were prepared on microscope glasses by dip coating using an alkoxide base sol gel method.
载玻片在金属醇化物的溶胶中浸涂、热处理，获得厚度为50～90nm的TiO2和XAl2O3－YTiO2－ZSiO2涂膜（X＝0～30，Y＝0.25～0.60，Z＝0.20～0.65，摩尔分数）。
The former reason is that the total molar fraction of carboxyl groups does not change with the molar ratio of the units of carboxy methylcellulose and acrylic acid in hydrogels, thus the degree of physical cross-linking is little or not changed by the composition of hydrogels in the case of the same molar fraction of cross-linkers; while the latter is that the pH change of buffer solution can cause the remarkable change in the extent of protonization of carboxyl groups, consequently resulting in a remarkable change of the degree of physical cross-linking.
前者是因为凝胶羧基的总摩尔分数并不随两组分结构单元摩尔数的改变而改变，羧基之间通过氢键形成的物理交联程度在交联剂摩尔分数接近的条件下变化不大；后者是由于溶液的pH值显著影响凝胶羧基的质子化程度，进而影响羧基之间通过氢键形成的物理交联程度。
The kinetics of tertamyl methyl ether synthesis using C5 fraction of FCC gasoline was studied. The molar ratio of tertiary amylene to methanol was 1.0 and the kinetic experimental data was obtained at the temperature range from 55℃ to 90℃.
研究了FCC汽油中C5馏分合成甲基叔戊基醚的宏观动力学。C5原料与甲醇摩尔比为1/1，在温度分别为55℃~90℃时反应得到了动力学实验数据。
Cu/La2O3/Al2O3 catalysts displayed high activity and great selectivity for hydrogen. A maximum methanol conversion of 94.5 mol%, H2 selectivity of 100 mol% and H2 molar fraction of 75% were obtained at 250 ℃ with the ca...
结果表明：La2O3的加入促进了铜在催化剂表面的高度分散，阻止了铜晶粒团聚、烧结，促使铜晶粒细小化，促进了铜的还原，从而改善了催化剂的性能，提高了催化剂的活性。
The gasification efficiency increased and the molar fraction of H2 decreased with an increase in the reaction temperature. The decomposition of PVA was more complete at higher temperatures. At 24 MPa, 500℃ and 120 s, the TOC remove rate, the carbon gasification rate and the hydrogen gasification rate were up to 71.46%, 67.97% and 157.24% respectively. A change in the residence time had no significant effect on the molar fraction of gas production but an increase in the residence time could enhance the gasification efficiency of PVA. It was found that the intermediates were mainly alkane, cycloparaffin, aromatic hydrocarbons, and low-molecular weight acids. It was supposed that PVA was degraded into small molecules through breaking of C-C bonds. Parts of the molecules were converted into H2, CO, CH4 and CO2 while some was converted into aromatic hydrocarbons.
过程探索发现：反应温度的升高能提高PVA气化效率，但气体产物中H2的含量随反应温度的升高有所下降；随着反应温度的升高，PVA分解趋于彻底，在压力24MPa、温度500℃、停留时间120s的条件下，TOC去除率、有机碳气化率和氢气化率分别达到71.46%，67.97%和157.24%；停留时间的变化对气体产物含量没有明显的影响，但延长停留时间能提高PVA的气化效率；PVA气化反应中间产物主要为链状烷烃、环烷烃、芳香烃及小分子酸，根据中间产物出现的顺序推测PVA的降解为由C-C键断裂形成小分子物质，这些小分子物质一部分转化为H2，CO，CH4和CO2，一部分形成难降解的芳香族化合物。
Interaction between Na(superscript +) and SO(superscript 2- subscript 4) strengthens and molar fraction of NaSO(superscript - subscript 4) ionic pair increases, with increasing concentration of aqueous Na2SO4 solutions.
随著Na2SO4水溶液浓度的增加，Na和SO(上标 2-下标 4)的相互作用增强，NaSO(上标-下标 4)离子对所占的摩尔分数增加。
The BED experiment for acetonitrile-toluene system with isopropyl benzene and mixed solvents was carried out respectively and the influence of reflux ratio and solvent ratio on BED process was analyzed in this paper. The result shows that the performence of mixed solvents is superior to single solvent and the molar fraction of acetonitrile in column top can reach 0.994; reflux ratio and solvent ratio have little influence on the yield of acetonitrile; reflux ratio can be 2~3 in favor of separation of acetonitrile and isopropyl benzene at stage of acetonitrile distillated; solvent ratio of mixed solvents at 1~1.5 is adequate; reflux ratio can be moderately decreased to reduce operational time at subsequent stage.
分别采用纯异丙苯及异丙苯-NMP混合溶剂进行了乙腈-甲苯物系的间歇萃取精馏实验并对回流比和溶剂比对过程的影响进行了分析，结果表明：在相同实验条件下，混合溶剂的分离效果明显好于单一溶剂，塔顶乙腈纯度可达0.994；溶剂比及回流比对乙腈收率的影响不大；在乙腈产品采出阶段，可取较大回流比以利于乙腈和异丙苯的分离，如2~3，同时混合溶剂的溶剂比不宜过大，可取1~1.5；在采出甲苯产品及回收溶剂阶段可适当降低回流比以减少操作时间。
The Ybx:KY1-x(WO4)2(x=5﹪, molar fraction, the same below)and KYb(WO4)2 crystals were grown by the top seeded solution growthmethod. Both their structure and spectral properties were compared.
用顶部籽晶提拉法(top seeded solution growth，TSSG)生长出Ybx：KY1-x(WO4)2(x=5﹪，摩尔分数，下同)和KYb(WO4)2晶体，比较了两者的结构和光谱性能。
It was discovered that the Bunsen solubilities of air in silicone with quite different molecular mass were close to each other. The results suggested that the molar fraction based on the monomer mass was more appropriate than that based on the molecular mass for engineering extrapolation of the solubility data of small and non-polar solutes in polymer solvents.
发现空气在相对分子质量差异很大的两种二甲基硅油中的本生溶解度很接近，由此提出，对于小分子的非极性溶质在聚合物溶剂中的溶解度，用聚合物单体的摩尔数而不是聚合物分子摩尔数来表示摩尔浓度更有利于实验数据的外推和工程应用。
With a higher arachidic acid molar fraction of 0.5, aggregates in the mixed LB film became larger, which may be related to the accumulation characteristic of arachidic acid.
但若将二十碳酸的量提高到50mol%，在混合LB膜中的聚集则明显变大，这可能与二十碳酸分子本身的聚集特性有关。
When the molar fraction of SnO2 is 83%, the main component of the coating isO2 solid solution with rutile structure. When the molar fraction of SnO2 is 44%, the main components of coating are theO2 solid solution with rutile structure andO2 solid solution with fluorite structure. When the molar fraction of SnO2 is 17%, the main component of the coating isO2 solid solution with fluorite structure. Annealed at higher temperature than 450 ℃, CeO2 is found in the coating containing 83%Sn, and there is not SnO2 in the coating containing 83%Ce, which suggests that fluoriteO2 has higher thermal stability than rutileO2. When the molar fraction of SnO2 increases, the dispensability of the coatings is improved greatly.
结果表明：通过控制制备条件可获得具有纳米结构的钛阳极涂层；当Sn的摩尔分数为83%时，涂层主要为金红石相的O2固溶体；当Sn的摩尔分数为44%时，涂层中金红石相O2固溶体和萤石结构的O2固溶体共存；当Sn的摩尔分数为17%时，涂层由萤石结构的O2固溶体组成；高于450 ℃退火时，含83%Sn的涂层中出现CeO2相，而在含83%Ce的涂层中没有出现SnO2相，表明在相同的溶质浓度下，萤石结构的O2固溶体比锡基金红石相O2固溶体具有更好的热稳定性；而涂层中的SnO2具有明显改善涂层分散性的作用。
The conversion of Eu~(3+)→Eu~(2+) in KMgF_(3)∶Eu is almost 100% at the low dopant concentration and the saturant dopant is 0.29% molar fraction.
KMgF3具有典型的立方钙钛矿结构特征，是各向同性的强离子性晶体，被认为是理想的激光基质材料。
Multiple-walled carbon Nanotubes were used as carrier to load cerous sulfate catalyst for catalytic synthesis of n-butyl propionate Single factor and orthogonal experiment methods were applied to investigate the effects of the molar ratio of butyl alcohol to propionic acid, cerous sulfate mass fraction and reaction time on the conversion of propionic acid and the optimal technical conditions were determined as:ratio of butyl alchhol and propionic acid 1.5:1, cerous sulfate mass fraction 15% and reaction time 70 min.
以多壁碳纳米管作载体担载硫酸铈催化合成丙酸丁酯。分别采用单因素和正交实验方法考察了醇酸摩尔比、硫酸铈质量分率和反应时间等主要因素对丙酸丁酯得率的影响，并确定了最佳工艺条件为：醇酸摩尔比1.5：1、硫酸铈质量分率15%和反应时间70 min。
Firstly, in my paper, the equipment of batch distillation was used, raw material from the sourse of natural gas which had high quality relatively was chosen to make high purity methanol through analyzing the testing results of three different sources of methanol inland; Secondly, constant-molar-holdup model of batch distillation for high purity methanol was proposed and solved by the two-point implicit combined with component balance calibration. Some kinds of effect factors on recovery fraction of high purity methanol were simulated, such as reflux retio, theoretical plates stages, holdup slop, cut withdrawal, etc. As the simulating results showing, when the composition of raw material was 98%, and the average purity specification of high purity in top of column was above 99.9%, the feasible number of theoretical plates was 35, the reflux retio of product phase and slop cut withdrawal respectively were 5 and 10, and the proportion of the outpu of slop cut withdrawal was 15%. Accordingly, the single recovery fraction of high purity methanol was between 50% and 65%. Thirdly, in order to testify the veracity and reliability of the model mentioned above, the raw material of methanol from natural gas was used to experiment for the process of batch distillation. The experimental result was relatively closed to the simulating result., the scope of error was below 10%, which showed it preferable veracious and feasible that constant-molar-holdup model was used to simulate the process of batch distillation for high purity methnol.
本文首先利用间歇精馏装置，分析国内三种不同甲醇原料气来源的甲醇原料，比较结果，最终选择较优的天然气为原料气的甲醇原料制备高纯甲醇；其次，建立高纯甲醇的间歇精馏恒摩尔持液模型，采用了两点隐含法和组分衡算相结合的方法对该模型进行了求解，模拟分析了影响高纯甲醇收率的各种因素，如回流比、理论板、持液量和前馏分等，计算结果表明：当原料组成为98%，塔顶甲醇产品的平均浓度≥99.9%时，适宜理论板数为35块，产品段回流比R为5，前馏分段回流比R_1为10，前馏分的馏出量控制在15%，所得到高纯甲醇的单程收率在50～65%之间；随后，实验验证了模型的准确性和可靠性，实验结果与模型计算结果比较吻合，误差范围在10%以下，表明本文所建的恒摩尔持液模型用于高纯甲醇的间歇精馏模拟计算具有较好的准确性和可靠性；最后，在实验与模拟结果的基础上，确定了高纯甲醇的最终制备工艺路线：理论板数34块，回流比R为5，前馏分段回流比R_1为10，前馏分的馏出量为15%，最终产品单程收率是57.1%。
It is found that the equilibrium yield of hydrogen, methane, carbon monoxide, and the molar fraction of hydrogen decrease, while the equilibrium yield of carbon dioxide increases with the increase of the oxidant equivalence ratio.
热力学研究表明：随着氧化剂当量的增加，H2、CH4、CO的平衡产量减少，CO2的平衡产量增加，而且H2的体积分数也随之减少。
5% (molar fraction) yttria stabilized zirconia (YSZ) coatings as an electrolyte for solid oxide fuel cells (SOFCs) were prepared using atmospheric plasma spraying process.
采用大气等离子喷涂制备用于固体氧化物燃料电池（SOFCs）、摩尔分数为4.5%YSZ电解质涂层；
The fractions of bulk water and anion bound water decreased with increase in molar ratio of water to surfactant in the system. Meanwhile the fraction of cation bound water increased and the fraction of trapped water keeps constant basically.
随着体系中加水量的增加，本体水和阴离子结合水的质量分数减小，阳离子结合水的质量分数增加，而束缚水的质量分数变化很小。
Poloxamer 407 and PVA totally enwrapped the surface of SLM when the molar fraction of ibuprofen was increased from 1% to 5%.
以poloxamer407和PVA为稳定剂，随着布洛芬摩尔分数由1%增大到5%，稳定剂都能很好地包覆在颗粒的表面。
With the increasing of BP molar fraction, the melting point presents a down and up trend whereas the lowest melting point turns out at a point where the molar fraction of biphenyl is20%.
聚合物的熔点随联苯含量的增加呈先下降后上升的变化规律，体系在联苯含量为20%处出现最低共熔点。
Close to molar fraction of zero. Instead, Henry's law.
接近零的时候不成立，成立的是亨利定律。