查询词典 acid ratio

The experiment gone in a hermetical batch reactor,in this paper cellulose was hydrolyzed with extremely low acid as the catalyst in the high-temperature and high-pressure condition. Factors influencing the sugar yield and cellulose conversion ratio by hydrolysis including reaction time and the concentraction of the acid were studied systematically.

本实验是在密封性良好的间歇反应器中，以生物质的主要成分纤维素为原料，在高温高压条件下进行了极低浓度硫酸为催化剂的均相水解反应研究，系统研究了停留时间、酸浓度对水解糖产率和纤维素转化率的影响规律。

The results showed that when the catalyst amount was 4 g/L,the molar ratio of L-ascorbic acid to malic acid was 1:3,and the reaction temperature was 55 ℃,the highest L-ascorbyl malate yield of 69.30% could be obtained.

结果表明：添加固定化酶量4g/L，底物配位物质的量比1：3，温度55℃，L-抗坏血酸苹果酸酯的得率最高为69.30%。

The best performance for Sw: 1 Al' mole ratio calcination temperature, curing time 650 qC Rao 3 h: citric acid catalytic Taiwan into the best condition of isooctyl catalyst for: 1 (2%), the total alcohol acid mellowly Moore j l: 5 than when asked 2 h.

焙烧温度650 qC。焙娆时间3 h：催化台成柠檬酸异辛酯的最佳条件为：催化剂用量1 2％，酸醇摩尔比l：5。

During the manufacturing of the critical intermediate cephalosporin nucleus --7-amino-3-chloro-cephalosporanic acid diphenylmethyl ester hydrochloride salt, first the feasibility of the one-pot synthetic route of open loop, closed loop and ozonization when chlorine is passed over is qualified by experiments. Then the critical factors that will influence this reaction are studied as follows: the mol ratio of triphenyl phosphite and Diphenylmethyl 3-hydroxy-7-phenylacetaminoceph-3-em-4-carboxylate-l-oxide is four to one; the quantity of the stablizer should be at least more than two to one. The temperature of the system must be 25℃ when chlorine is passed over so that the hydrochloride can be precipitated to obtain cephalosporin nucleus of cefaclor--7-amino-3-chloro-cephalosporanic acid diphenylmethyl ester hydrochloride salt.

在制备关键中间体头孢母核7-氨基-3-氯头孢烷酸二苯甲酯盐酸盐时，先通过实验验证把开环、闭环、臭氧化三步在通入氯气时并为一锅煮的合成路线的可行性之外，又研究了影响该反应的几个重要因素：亚磷酸三苯酯与3-羟基-7-头孢烷-5-亚砜-2-甲酸二苯甲酯的摩尔比为4：1；稳定剂2-甲基-2-丁烯的用量至少大于2：1，通入氯化氢气体时体系温度在25℃时盐酸盐则能够顺利析出，获得头孢克洛的头孢母核—7-氨基-3-氯头孢烷酸二苯甲酯盐酸盐。

The synthesis condition of PSFCS were: Fe-to-Si mol ratio being 2, silicic acid activation pH being 2, silicic acid activation time being 30~40 minutes, ageing time being 2~2.5 hours.

PSFCS的合成条件：Fe/Si摩尔比为2，硅酸活化pH值为2，硅酸活化时间是30～40 min，陈化时间是2～2.5 h。

It is pointed out that under the condition of the temperature of 1120℃, the reaction time of 16 mm and the carbon content of 27%, the metal transformation rate of sponge iron used for general metallurgy is up to 90%. But the optimal carbon content is 29% for iron sponge to treat DSD acid oxidation wastewater. Under condition of the wastewater's pH value of 3 to 5 and the reaction time of 40min, the removal rates of COD and color are 68% and 90%, respectively. The BOD/COD ratio is up to 0.425 when DSD oxidation acid water is treated with sponge iron.

研究表明：在配碳量27%、反应温度1160℃、反应时间16min的情况下，以铁泥为原料制备的常规海绵铁的金属化率可达90%以上；用于处理DSD酸氧化废水的海绵铁适宜配碳量为29%，用制备出的海绵铁处理DSD酸氧化废水，在pH值3~5、反应时间40min时，出水的COD去除率可达68%、色度的去除率达90%、可生化性指标BOD/COD提高到0.425。

Amino-sulfonic acid single aromatic ring type high range water reducer was synthesized form aminobenzene sulfonic acid, phenol and formaldehyde. The influence of monomers ratio, reaction temperature reaction time, pH value, the concentration of monomer on the performance of AS high range water reducer was analyzed.

以对氨基苯磺酸钠、苯酚和甲醛等为原料合成出了氨基磺酸单环芳烃型高效减水剂，研究了反应单体的摩尔比以及工艺参数对AS高效减水剂对水泥颗粒分散效果的影响。

Amino-sulfonic acid single aromatic ring typehigh range water reducer was synthesized form aminobenzene sulfonic acid,phenol and formaldehyde. The influence of monomers ratio,reaction temperature,reaction time,pH value,the concentration of monomer on the performance of AS high range water reducer was analyzed.

以对氨基苯磺酸钠、苯酚和甲醛等为原料合成出了氨基磺酸单环芳烃型高效减水剂，研究了反应单体的摩尔比以及工艺参数对AS高效减水剂对水泥颗粒分散效果的影响。

The proper synthetic technology are as follows: molar ratio of P-aminobenzene sulfonic acid/phenol/formaldehyde is 1∶2∶9, concentration of P-aminobenzene sulfonic acid is 0.4mol·L~-1 , pH of reaction system is 8.0, reaction temperature is 95℃ and reaction time is 3.5h. aminobenzene sulfonate ; dispersant ; ceramic grind additives

国外在磨矿行业已大量使用高效减水剂助磨并取得了显著效果，国内关于这方面的研究起步较晚，主要采用如碳酸钠、硅酸钠、磷酸钠等无机盐，而且也主要是用于有色金属选矿方面，在硅酸盐工业原料加工中有部分采

Effects of ordinary silage and mixed silage on the Robinia pseudoacacia, Caragana and Amorpha fruticosa silage were studied by observing color, odor, texture, pH, organic acid composition and content, ammonia-N / total-N ratio, crude protein, neutral detergent fiber, acid detergent fiber and comparing their nutritive value before and after silaging. Results showed that silage quality of R.

对刺槐、柠条和紫穗槐进行了单独青贮和两两混合青贮，并从青贮饲料的色泽、气味、质地等感官品质，pH值、有机酸含量及组成、氨态氮／总氮比值这些发酵品质，以及粗蛋白、中性洗涤纤维和酸性洗涤纤维这些营养价值方面进行了分析评定。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。