The results indicate that the optimum technological conditions are as follows:the particle size of mineral is 0.149mm,the leaching temperature is 323K,the concentration of leaching agent is 10%,and the proportion of liquid to solid is 10∶1 .
The results indicate that,when the particle size is less than 75 μm,the stirring rate more than 200 r/min and the amount of activating reagent 1.5% and these factors are taken as invariable factors, the optimum technological conditions are as follows:the leaching temperature 100 ℃,the leaching time 3 h, the concentration of sulfuric acid 45%,and the proportion of liquid to solid 4.0∶1.
The results indicate that when the clay partical size is less than 74 μm, the stirring rate is 150 r/min,the volume of solution for adsorption is 50 mL and the above three factors act as invariable ones, the optimum technological conditions are as follows: the adsorption temperature is 90 ℃, the adsorption time 4 h, and the dosage of palygorskite 1.5 g.
The results indicated that the organobentonite particle size is less than 74 μm、the stirring speed is 150 r/min、the volume of solution for sorption is 25 mL and the above three factors act as invariable ones, the optimum technological conditions are as follows: the dosage of organobentonite 2.0 g,the sorption temperature 40 ℃,pH 7,the sorption time 1.5 h.
The influential factors of synthesizing 2-ethyl -4-ethoxy-6-hydroxypyrimidine were investigated by uniform test design, the one optimum process conditions were obtained by regression analysis, followed as :molar ratio of 2-ethyl-4,6-dihydroxypyrimidine to diethylsulphate 1:1.5;
The optimum process conditions are found. Thus, reacting at 110℃~ 120 ℃ for 24h(even more time) with n(Chloropropanol):n(ammonia) = 1:20, the conversion of 2-Chloro-1-propanol is 76.31%, the selectivity of (±)-2-Aminopropanol is 93.67% and the yield of (±)-2-Aminopropanol is 71.48%.
The preparation of feed-grade calcium hydrophosphate from the reaction of waste calcium carbonate with wet-process phosphoric acid is described. The optimum process conditions are as following. When the defluorination by potassium chloride and waste calcium carbonate to pH≥2,thus P 2O 5/F≥320,and pH for neutralization=5.8～6.0.
The synthesis of the tributyl citrate are catalyzed by sodium bisulfate monohydrate. The optimum process conditions are showed as follows:amounts of catalyst in the range4.0%～4.5%,which is expressed by the mass fraction of total weight of reagents,citric acid/n-butanol is1∶(4.5～5.0).
The results show that the optimal technological conditions for preparing modified MnO 2 by using Bi(NO 3) 3 as adulterant is as following: mole ratio of n(Mn)/n(Bi) is 6～10, oxidant is NaClO, manganic compound is Mn(NO 3) 3 or MnSO 4, temperature is 25 ℃, reaction time is 10～15 h.
The optimal technological conditions were obtained as follows: the molar ratio of acid to alcohols is 2. 0∶1. 95, the content of adipic acid is 10% (to acid). The product's Tg is 54℃, and suitable for powder coatings.
The yield of oaminophenol methyl ether was above 93% under the optimum reaction condition, the consumption of catalyst 1%, the reaction temperature 120 ℃, the reaction pressure 5 MPa, and the reaction time 3 h.
The yield of diphenylamine was above 55% under the optimum reaction condition,i. e. the consumption of HD95 2 was 8%,the molar ratio of aniline to phenol was 2∶1,the temperature was 360℃,and the reaction time was 14h
The yield of 1-chloro-2-methyl-propane was over 65% under the optimum reaction condition:reaction mixture molar ratio 1.25∶1(sulphurous oxychloride∶isobutanol)the reaction temperature 70℃,the consumption of catalyst 3.13%,the reaction time 4 hrs.
The optimum reaction condition of esterization reaction Ⅱwas obtained by uniform test as follows :n(1,4-butanediol bismaleic anhydride monoester):n(AEO 2)=2.15:1.00,reaction temperature was 150℃,reaction time was 14h ,the dosage of the catalyst was ω (PW 12 /C)=1.5%. The molecular constructs were determined by IR and LHNMR.
The yield of 2 nitrobenzyl alcohol was 80% and the purity above 95% by using di(2 ethyl hexyl)peroxy dicarbonate catalyst under the optimum reaction condition,i. e. the molar ratio of 2 nitrotoluene to bromine was 2∶1,the bromination temperature was 64～66℃,the bromination time and the hydrolysis time were 2h and 16h respectively.
The optimum technological conditions for fabricating these junctions were determined.
Optimum technological conditions for the growth of oriented SrTiO3, NdGaO3, and CeO2 films on silicon are determined.
In addition to the applicability of the two wood species used, the optimum technological conditions of curved LVL production with radiofrequency (RF) heating and the physical and mechanical properties of curved LVL were investigated.
We show that it is possible to use methods of statistical experimental design in finding the optimum technological conditions for the formation of viscose cord.
With these results, optimum process conditions are determined.
The optimum process conditions for organic modification were that the coating agent dosage is 22 g/L, reaction time is 90 minutes and the pH value of pulp is 10.
The optimum process conditions pH, temperature, inoculum size, agitation, and aeration for vancomycin production by Amycolatopsis orientalis were evaluated, statistically analyzed, and the response surface curves were constructed.
The optimum process conditions were a pH of 7.6, a temperature of 29°C, an inoculum size of 4.5%, an agitation of 255 rpm, and an aeration of less than 1:10 medium-to-air ratio.
These predicted values for optimum process conditions were in good agreement with experimental data.