公开(公告)号：US5109716A

公开(公告)日：1992-05-05

申请号：US605958

申请日：1990-10-30

申请人： Mutsuhiro Ito ,  Toshiyasu Abe ,  Ryuji Orii ,  Tomio Yamakoshi

发明人： Mutsuhiro Ito ,  Toshiyasu Abe ,  Ryuji Orii ,  Tomio Yamakoshi

IPC分类号： G01N15/08

CPC分类号： G01N15/0893

摘要： The actual flow rate of gas to the solid-sample container or to the gas reservoir can be precisely obtained according to variances in the pressure of the gas reservoir without directly adjusting the flow rate precisely. The volume of gas not adsorbed in the sample container can be obtained from the pressure in the sample container. The adsorption can easily be determined from the difference between the flow rate of gas and the volume of gas not adsorbed in the sample container. Even if the flow rate fluctuates, the adsorption can precisely be obtained. The desorption can easily be obtained in the same way. Gas is exhausted from the gas reservoir in advance. When desorbed gas in the sample container is continuously exhausted to the gas reservoir, the pressure in the gas reservoir is measured. Since the adsorption and desorption are thus precisely obtained, the adsorption of desorption isotherm can be drawn by plotting the pressure at each point of time and the corresponding adsorption or desorption of the solid sample. Consequently, the surface area, pore diameter distribution, pore volume and the like of the solid sample can precisely be calculated.

公开(公告)号：US5589150A

公开(公告)日：1996-12-31

申请号：US845528

申请日：1992-03-04

申请人： Jiro Kano ,  Ryuji Orii ,  Yuzo Horinouchi ,  Mutsuhiro Ito

发明人： Jiro Kano ,  Ryuji Orii ,  Yuzo Horinouchi ,  Mutsuhiro Ito

IPC分类号： C01B33/158 ,  B01J21/08 ,  B01J37/00 ,  C01B33/154 ,  C01B33/157 ,  C01B33/16 ,  C08F4/06 ,  C08F4/18 ,  C08F10/00 ,  C01B33/12

CPC分类号： C01B33/16 ,  B01J21/08 ,  B01J37/0045 ,  C01B33/154 ,  C01B33/157

摘要： In the present invention, minute spherular silica gel particles suitable as polymer catalyst carriers can easily be obtained without using organic substances simply by controlling the moisture content in a slurry of silica hydrogel particles and water. The obtained spherular silica gel particles have physical properties, such as specific surface area, average pore diameter, and pore volume, that may be easily controlled. The spherular silica gel particles also have sufficient particle strength.

摘要翻译： 在本发明中，通过控制二氧化硅水凝胶颗粒和水的浆料中的水分含量，可以容易地获得适合作为聚合物催化剂载体的微小球状硅胶颗粒而不使用有机物质。 获得的球状硅胶颗粒具有可以容易地控制的物理性质，例如比表面积，平均孔径和孔体积。 球状硅胶颗粒也具有足够的颗粒强度。