查询词典 acid process

In this work, the degradation process, mechanism, kinetics as well as the separation and purification of levulinic acid production from biomass, such as wheat straw and wood powder, were evaluated at high temperature and catalyzed by acid.

本文以麦秸和木屑等木质纤维素类的可再生资源为原料，对在高温及酸存在的条件下降解制备乙酰丙酸的工艺条件、生成机理、反应动力学及提取工艺进行了研究。

A modified high-pressure stirring tank reactor was applied to study the dynamic degradation process of the wheat straw and sawdust for levulinic acid production at different temperature(190℃、210℃ and 230℃) and acid concentration 1%, 3% and 5%.

利用改进的高压搅拌釜，实验研究了小麦秸秆降解生产乙酰丙酸的动态过程，考察了在不同温度(190℃、210℃和230℃)及不同硫酸浓度(1％、3％和5％)条件下，小麦秸秆和木屑的降解过程。

From the Late Carboniferous to the Permian, Junggar region into the post-collision tectonic evolution stage, in the stage of the post-collision, the early subduction slab rupture and separate, asthenosphere decompression melting, basalt magma take place underplating, because the underplating of the basalt magma, low crust melt by the high temperature forming the acid crust-magma, the basic magma from mantle and acid one from crust mixing at the vicinity of the crust-mantle boundary, formed the Huangyangshan magma mixing plution, the dioritic microgranular enclaves are the recorder of the crust and mantal magma mixing process.

从晚石炭世到二叠纪，准噶尔地区进入后碰撞构造演化阶段，在后碰撞构造阶段，早期的俯冲板片断离，软流圈减压熔融，玄武质岩浆底侵至下地壳底部，底侵基性岩浆带来的巨大热量，导致地壳物质熔融，形成大规模的花岗质岩浆，两种岩浆在壳-幔边界附近发生不同程度的混合，其中闪长质微细粒包体就是基性的幔源岩浆和酸性的壳源岩浆不同程度的混合的记录者。

The process of esterification of propylene glycol monomethyl ether with acetic acid to synthesize propylene glycol monomethyl ether acetate is investigated using 98% sulfuric acid as catalyst.

研究了以浓硫酸为催化剂，丙二醇甲醚和醋酸酯化合成丙二醇甲醚醋酸酯的过程，考察了醚和酸比例、催化剂用量等因素对反应的影响，并选择甲苯为水萃取剂。

Presented in this paper is the process of design a fast pulse-charger for lead-acid battery. The charger is mainly designed for nonspillable lead-acid assembled batteries that used in automobiles, proposed working envirments are home and outdoors,main requirements are short charging time, high charging efficiency, smart control methods, reliable work,efficiently increase the life of batteries.

本文介绍了一个铅酸蓄电池脉冲快速充电装置的研制过程，这一装置以汽车用密封铅酸蓄电池作为主要充电对象，以家用及室外环境卫主要工作环境，主要设计要求为充电时间短，充电效率高，控制智能化，运转安全可靠，能够有效延长蓄电池寿命。

Palmitic acid-silicon dioxide nano-composite phase change material was prepared by sol-gel process from tetraethyi orthosilicate and palmitic acid.

采用溶胶—凝胶法，以正硅酸乙酯和棕榈酸为主原料，制备了一种有机—无机纳米复合相变材料。

The process of the present invention consists in bringing into contact, on the one hand, gaseous phosphorus pentafluoride or a gaseous mixture comprising phosphorus pentafluoride and hydrochloric acid, and, on the other hand, a solution of lithium fluoride in hydrofluoric acid, in a column (10) having a sufficient number of transfer units to carry out the reaction of PF5 with LiF under the chosen conditions of temperature, of pressure and of molar ratio of the two contrasting reactants and with complete or substantially complete absorption of the PF5 in the column.

本发明方法是让气态五氟化磷或五氟化磷与盐酸的气态混合物与氟化锂的氟氢酸溶液在塔（10）中接触，该塔转化单元数足以在选定温度、压力与两种反应剂摩尔比条件下使PF5与LiF反应，塔中五氟化磷完全或基本完全被吸收。

The invention relates to a fabric nanometer following cleaning agent for obtaining TiO2/ZnO composite hydrosol, and relative production and cleaning method, wherein it uses butyl titanate and zinc acetate as predecessor, uses glacial acetic acid as catalyst and peptizer, uses water as solvent, uses absolute ethyl alcohol as the solvent of butyl titanate, and uses ethanolamine as deposit agent and supplies OH-, to be hydrolysed and polycondensated to form TiO2/ZnO composite hydrosol. And its components and mass percents are: butyl titanate at 1-15%; zinc diethyl at 1-12%; absolute ethyl alcohol at 1-20%; glacial acetic acid at 5-15%; and aminoethyl alcohol at 0.1-5%, and the left is water. The invention has lower cost and simple process.

本发明涉及一种可以得到TiO 2 /ZnO复合水溶胶的纺织品纳米后整理试剂及其制备工艺及对织物的整理方法，以钛酸丁酯和乙酸锌为前驱物，冰乙酸为催化剂和胶溶剂，水为溶剂，无水乙醇为钛酸丁酯的溶剂，乙醇胺为沉淀剂并提供OH -，经过水解、缩聚反应形成的TiO 2 /ZnO纳米溶胶整理剂，其组分和重量百分比含量如下：钛酸丁酯占1～15％；二水乙酸锌占1～12％；无水乙醇占1％～20％；冰乙酸占5％～15％；乙醇胺占0.1％～5％；水余量，具有耐洗性、无毒、无刺激、成本低廉、制作工艺简单可靠的优点，可实现对对织物的抗紫外、抗菌、抗静电功能整理。

We investigate the process of extracting phytic acid from bran, and check the content of phytic acid.

研究了从麦麸提取菲汀的工艺条件，并对菲汀含量进行了检验。

The results indicate that the pillaring process and crystal growing of anatase can be more easily realized by increasing the acid-base ratio of pillaring agents, raising the pillaring temperature and adding proper quantities of alkali. The calcination of Ti-pillared precursor brings the growth of TiO2 grain, at the same time the layer distance is declined. In order to obtain ideal products, the right pillaring conditions are: the acid-base ratio of pillaring agents of 13, pillaring temperature of 65 ℃ and the volume of alkali (2 mol/L) in pillaring liquid of 6 mL.

结果表明：在一定范围内增大柱撑剂酸碱比、提高柱撑温度以及加入适量碱，有利于插层复合反应的进行和锐钛晶型的生长；柱撑前驱物焙烧后TiO2晶粒长大，同时焙烧引起的脱水导致膨润土层间距的下降；为获得较理想的产物，合适的柱化条件为：柱撑剂酸碱比 n n (HNO3)为13、柱撑温度65 ℃和柱撑液加碱量为(2 mol/L NaOH) 6 mL。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失