硅酸

High reinforced white carbon black is prepared by using phosphate fertilizer's by-product fluosilicic acid as raw material and ammonia water as ammonia analytical agent.

利用磷肥副产氟硅酸为原料，采用氨水作为氨解剂制备高补强白炭黑。

Fluosilicic acid is the by-product in production of phosphate fertilizers.With certain temperature,adjusted pH,and controlled reaction time,fluosilicic acid was dissolved in the solution of ammonia liquor,and then runny paste of silica and solution of ammonium fluoride were obtained after seperating the reaction slurry.

采用氨水在一定温度下与磷肥行业副产品氟硅酸反应，调整pH，控制反应时间，反应后得到的料浆，经过滤得白炭黑软膏和氟化铵溶液。

Mineral phase of LD slag was studied when smelting SPHC and Q235 by high phosphorus hot metal,the results show that mineral phase of slag consist of C2S mainly,P2O5 exist in C2S phase,After de-oxygen,mineral phase of slag consist of akermanite and gehlenite mainly.

主要研究了高磷铁水转炉冶炼SPHC和Q235低合金钢后转炉渣矿相组织，实验结果表明，高磷铁水转炉渣的矿相组织主要以硅酸二钙(C2S)为主，P2O5主要存在于该相中。

The high compressive strength is obtained when the modulus of the activator viz., molar ratio of SiO2/Na2O is 1.5, and the proper content of this activator evaluated by the amount of Na2O to the high-calcium fly is 10 %. The compressive strength of these samples is 63.4 MPa when they is cured at 75 oC for 8 hours flowed by curing at 23 oC for 28 days. The main gels of geopolymer and calcium silicate hydrate, and Gismondine co-exist and bond some remaining unreacted fly ash spheres.

结果表明：复合碱激发剂适宜的模数M =n(SiO2)/n(Na2O)为1.5，掺量为Na2O当量10％；适宜养护条件为，75oC养护8h，然后在23oC室温养护至所需龄期，其28d抗压强度达63.4MPa；碱激发高钙粉煤灰同时生成地聚合物凝胶和水化硅酸钙凝胶，并有类沸石矿物生成，反应产物与未反应的粉煤灰颗粒胶结成较为密实的高钙粉煤灰地聚合物。

Results indicate that MgO can promote the forming of calcium silicate hydrates and improve the exchange of tobermorite to xonotlite,Z phase to gyrolite.

结果表明：MgO可促进水化硅酸钙的形成，有利于托勃莫来石向硬硅钙石，Z相向白钙沸石的转化。

The results show that the hydrolyzation and polymerization of metal and the structure of polysilicate has great effect on the coagulation property of PMSS.

制备了含不同金属离子的聚硅酸盐混凝剂，考察了投加量、水样pH值、熟化时间和PMSS中硅酸含量等因素对其混凝性能的影响。

Isobutyl butyrate was synthesized from butyric acid and isobutyl alcohol using tungstosilicic acid as catalyst.

以钨硅酸为催化剂，通过桂酸和戊醇酯化反应合成桂酸戊酯，研究了各有关因素对产品酯化率的影响。

Hybrid mesoporous molecular sieve materials with hexagonal mesoporous structure and covalent bonded polyoxometalates were synthesized based on tetraethoxysilane anti lacunary polyoxometalate, SiW11, via sol-gel method in the presence of triblock copolymers P123 as the structure-directing agent. The influences of molar ratio of inorganic precursors and aging temperature on the structure and the loadings of SiW11 in the hybrid materials were investigated. Some reaction details in the synthesis were revealed.

用嵌段共聚物P123为模板剂，正硅酸乙酯和缺位结构的多金属氧酸盐SiW11为无机前驱体，由溶胶－凝胶法合成了具有六方结构和SiW11共价键联的介孔分子筛杂化材料SiW11/SBA-15，着重考察了无机前驱的配比和老化温度对杂化材料结构及SiW11负载量的影响。

The hybrid mesoporous materials, PW11/SBA-15, were synthesized using tetraethoxysilane and lacunary polyoxometalate Na7PW11O39 (PW11) by a co-condensation approach in the presence of triblock copolymer EO20PO70EO20 (P123) as a template.

采用三嵌段共聚物EO20PO20(P123)为模板剂，正硅酸乙酯和缺位Keggin型多金属氧酸盐Na7PW11O39(PW11)为无机前驱体，由共缩合法一步合成了PW11/SBA-15介孔杂化材料。

The inner tank adopts imported SUS304 material. The jacket adopts fully-enclosed aluminum silicate to keep warm. The outer tank is dressed up with SUS304 lusterless steel sheet.

设备内筒体材质为进口SUS304，夹套采用全封闭硅酸铝毯保温，外筒体贴SUS304亚光薄钢板饰面。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷