硅酸的

Fluosilicic acid,which is the byproduct from phosphate fertilizer factory,reacts with ammonium hydrocarbonate to obtain ammonium fluosilicate,then reacts with ammonium carbonate to form settled SiO 2,after filtration,water washing,drying and calcining,high purity SiO 2 with less than 10×10 -6 metal impurity and less than 10×10 -9 uranium and thorium respectively is made.

由磷肥厂副产氟硅酸同碳铵反应得氟硅酸铵，再和碳铵反应生成SiO2 沉淀，经过滤、水洗、干燥、煅烧得高纯SiO2 ，其金属杂质总含量小于 10× 10 -6，含放射性元素铀和钍各小于 10× 10 -9，通过实验获得了适宜的工艺条件，反应温度 70℃～ 80℃，反应时间 1 5h～ 2 0h ，配料比n(NH4HCO3 )∶n(NH4 2 SiF6 =4 4。

Further oxidation treatment or reduction treatment of molybdenum dioxide nanowire arrays resulted in molybdenum trioxide nanowire arrays and molybdenum nanowire arrays. We fabricated WO3 nanowire arrays successfully by further oxidizing W18O49 nanowire arrays. Based on the vertical aligned zinc oxide nanowire arrays, we prepared the aligned zinc oxide/silicon core-shell nanowire arrays, zinc oxide nanowire-zinc silicate nanotube heterojunction arrays and zinc silicate nanotube arrays by adjusting the size of the templates as well as the annealing temperature.

我们通过氧化和还原处理二氧化钼纳米线阵列，分别合成了三氧化钼纳米线阵列和单质钼纳米线阵列；通过氧化W18O49纳米线阵列合成了三氧化钨纳米线阵列；利用氧化锌纳米线阵列作为模板，通过调节氧化锌纳米线模板的尺寸和退火温度，合成了氧化锌－硅同轴纳米线阵列、氧化锌纳米线－硅酸锌纳米管异质结阵列和硅酸锌纳米管阵列。

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。

The problem from sodium tripolyphosphate,4A zeolite,sodium metasilicate and phosphorous prohibition was summarized and the various performances and effect of δ-layered crystal disodium silicate as detergent were analyzed.

分析了现用助洗剂三聚磷酸钠、4A沸石、偏硅酸钠存在的问题及禁磷的重要性，重点论述了δ-层状结晶二硅酸钠用作助洗剂的各种性能及效果，认为δ-层状结晶二硅酸钠是一种良好的无磷助洗剂，它具有其他助洗剂所不具备的优良性能；对δ-层状结晶二硅酸钠的制备工艺作了简要介绍，并作了市场及在国内工业化生产的可性行分析。

Sodium Silicate Powder can be as the application scope of liquid sodium silicate.

粉状硅酸钠可用于液体硅酸钠所能适用的范围。

The resultant of dehydration of both sodium silicate and polysilicic acid is silicic gel. The sodium cations have double impact on the process.

硅酸钠脱水硬化和纯硅酸脱水硬化都生成硅凝胶，钠正离子的存在有正负二重影响。

The results indicated that both the monomer and polymer silicic acids mainly reacted with the monomer aluminum to form soluble aluminosilicates.

结果表明：单体硅酸和聚硅酸主要与溶液中的单核铝反应生成溶解性硅铝酸盐。

Silicofluoride acid radical of the mother liquor will be transformed into sodium silicofluoride if excess sodium chloride was added,and the mother liquor was refined.The refined hydrofluoric acid and various aluminum can compose the by-product-cryolite,which can improve the collection rate of fluorin,aluminum and silicon.

其关键技术为氯化钠脱硅：投入过量氯化钠，使母液中氟硅酸根转化成副产品氟硅酸钠，母液被精制；再加入精制氢氟酸与各形态铝合成冰晶石副产品，从而有效地提高了氟、铝和硅的收率。

The phosphotungstic acid and the silicotungstic acid are prepared firstly, and the Keggin structure of them is also confirmed by IR spectrum. Then the HPWA/SiO2 and HSiWA/SiO2 are prepared by impregnation, and IR spectrum and UV spectrum are used to characterize the Keggin structure of them.

通过经典酸化－乙醚萃取法制备了钨磷酸和钨硅酸，并用红外光谱证明其具有Keggin结构；再用传统浸渍法对制备的钨磷酸和钨硅酸进行SiO2固载化，然后重点对杂多酸在固载化后Keggin结构是否依然保持进行了研究。

Poly silica hybrids were prepared through polymerization, condensation and sol gel processes of the mixture of methyl methacrylate, poly and a small amount of coupling agent methacryloxylpropyl trimethoxy siliane in tetrahydrofuran.

采用溶胶-凝胶技术，以硅酸钠为原料制备聚硅酸/四氢呋喃溶胶，再与甲基丙烯酸甲酯及少许偶联剂甲基丙烯酰氧丙基三甲氧基硅烷(MPTMS 混合，经聚合、缩合和溶胶-凝胶过程制备了有机/无机两相间有— C—Si—O—键的杂化材料——聚甲基丙烯酸甲酯/二氧化硅(PMMA/Si O2 )。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。