a United States Pat ent A NEW CRYSTAL'LINE FORM OF SILICA AND ITS PREPARATION Conrad L. Hoover, Wilmington, De]., assignor to E. I. du Pont de Nemours and Company, Wilmington, Del., a corporation of Delaware No Drawing. Filed Aug. 31, 1954, Ser. No. 453,447...
摘要: High silica forms of zeolite beta are prepared by aluminum extraction with acid.收藏 引用 批量引用 报错 分享 全部来源 求助全文 掌桥科研 相似文献Synthesis, characterization and catalytic performance of heteroatom substituted zeolite BYBY分子筛的合成、表征及其裂化性能考察 The heteroatom substituted ...
The structural transition was intimately related to the crystallization temperature and the densities of α and β forms. 展开 关键词: fumed silica kinetics (polym polyesters polymerization nanocomposites DOI: 10.1021/ma200166m 被引量: 8 年份: 2011 ...
Working with lattice-gas models, we give evidence that even at zero temperature matter does not always tend to form crystals; unit cells may tend to go out of phase. In particular, our results imply that noncrystalline equilibrium materials such as quasicrystals and incommensurate solids are not...
The invention relates to the crystalline form of the free acid monohydrate of zoledronic acid, the process for preparation of the crystalline form of the free acid monohydrate of zoledronic acid, compositions containing the crystalline form of the free acid monohydrate of zoledronic acid, and the ...
A vaporsolid mechanism was proposed to elucidate the growth process of the NWs, and the large length and high-yield of the SiC NWs may be ascribed to the stable release of SiO and CO gases form the carbonaceous silica xerogel. The simple method provides a promising candidate for industrial ...
Synthetic crystalline zeolite L of composition <FORM:1023283/C1/1> where M is an exchangeable ion from Groups I, II or III of the Periodic Table, H+ or NH4+ and n is the valency of M, and having given X-ray pattern, is prepared in its Na/K form by forming a mixture of compositio...
Silica gel can be expected to form readily from the poorly crystallized hydrated calcium silicates of the set cement under the decomposition conditions.doi:10.1038/171354a0COLEW. FNature Publishing Group UKNatureCole WF. A crystalline hydrated magnesium silicate formed in the breakdown of a concrete ...
(Supplementary Figs.3,4). This turbulent field could overcome the electrical orientation effect, and move the resulting nanofibres in a complex trajectory to entangle with each other and form a randomly twined fibrous aerogel structure (Supplementary Figs.5,6). Next, we used a mechanical folding ...
6.A process for the preparation of nilotinib hydrochloride Form L, comprising:a) dissolving nilotinib in a mixture of formic acid and ethylformate at a temperature;b) adding hydrochloric acid to the step a) solution at a temperature; andc) isolating the nilotinib hydrochloride Form L. ...