公开(公告)号：US4554211A

公开(公告)日：1985-11-19

申请号：US519496

申请日：1983-08-02

申请人： Junji Arika ,  Eiji Shiota ,  Kazuaki Yamamoto

发明人： Junji Arika ,  Eiji Shiota ,  Kazuaki Yamamoto

IPC分类号： B01D15/08 ,  B01J20/10 ,  B01J20/281 ,  B01J20/283 ,  B01J20/291 ,  C01B33/152 ,  C01B33/154 ,  C01B33/16 ,  G01N30/88

CPC分类号： B01J20/291 ,  B01J20/103 ,  C01B33/1546 ,  C01B33/166 ,  B01J2220/54 ,  Y10S516/922 ,  Y10T428/2982

摘要： A spherical micro-porous silica gel, which is characterized by having a mean diameter of 3-20 .mu.m, a bulk density of 0.28-0.41 g/cm.sup.3, a pore size of 18,000-100,000 and a specific surface area of 1,000-1,400 m.sup.2 /g and a production process therefor is characterized by employing (a) an aqueous solution containing SiO.sub.2 in which the primary particle diameter is not larger than 6 nm and the molar ratio of SiO.sub.2 to Na.sub.2 O is not larger than 5.5, (b) either stearic acid or a mixture of stearic acid and a non-ionic surface active agent of which HLB ranges from 3.5 to 6.0 as an emulsifier and (c) an organic acid as a gelling agent.

摘要翻译： 一种球形微孔硅胶，其特征在于平均直径为3-20μm，堆积密度为0.28-0.41g / cm3，孔径为18,000-100,000，比表面积为1,000-1,400 m2 / g，其制造方法的特征在于：（a）含有SiO 2的水溶液，其中初级粒径不大于6nm，SiO 2与Na 2 O的摩尔比不大于5.5，（b） 硬脂酸或硬脂酸和非离子表面活性剂的混合物，其HLB为3.5至6.0，作为乳化剂，和（c）有机酸作为胶凝剂。

公开(公告)号：US3980754A

公开(公告)日：1976-09-14

申请号：US603107

申请日：1975-08-08

申请人： Susumo Otsuki ,  Junji Arika ,  Mitsunobu Kashibe ,  Kosuke Takeshige

发明人： Susumo Otsuki ,  Junji Arika ,  Mitsunobu Kashibe ,  Kosuke Takeshige

IPC分类号： C01D7/26 ,  C01B1/28 ,  C01D1/32

CPC分类号： C01D7/26 ,  Y02P20/142

摘要： An alkali carbonate containing a fluorine compound is purified by dissolving the crude alkali carbonate in an aqueous solution or suspension of magnesium bicarbonate in order to transfer the fluorine impurity into the resulting colloidal flocculated precipitate whereby the fluorine is substantially separated from the aqueous solution of the alkali carbonate.

摘要翻译： 将含有氟化合物的碱金属碳酸盐通过将粗碱金属碳酸盐溶解在碳酸氢镁的水溶液或悬浮液中来纯化，以便将氟杂质转移到所得的胶体絮凝沉淀物中，由此氟基本上与碱的水溶液分离 碳酸盐。