公开(公告)号：US11982604B2

公开(公告)日：2024-05-14

申请号：US17309002

申请日：2019-10-08

申请人： Saint-Gobain Ceramics & Plastics, Inc.

发明人： Tritti Siengchum ,  James M Ralph

IPC分类号： G01N1/40 ,  F01N11/00 ,  G01N1/02 ,  G01N30/72 ,  G01N33/00 ,  G01N33/38

CPC分类号： G01N1/405 ,  G01N30/72 ,  G01N33/0054 ,  G01N33/388 ,  F01N11/00 ,  G01N2001/028

摘要： Methods and systems of analyzing and quantifying a surface acidity on a low surface area sample are disclosed. The methods include analyzing a quantity of an effluent molecular probe desorption from a temperature programmed desorption (TPD) process and system, by employing a mass spectroscopy (MS) system. The molecular probe is chemically adsorbed on a clean surface of the sample before the TPD process. The sample has a surface area to mass ratio of less than 5 m2/g. In some embodiments, the total surface area analyzed in the method can be as low as 3 m2.

公开(公告)号：US20220026322A1

公开(公告)日：2022-01-27

申请号：US17309002

申请日：2019-10-08

申请人： Saint-Gobain Ceramics & Plastics, Inc.

发明人： Tritti Siengchum ,  James M Ralph

IPC分类号： G01N1/40 ,  G01N30/72 ,  G01N33/00 ,  G01N33/38

摘要： Methods and systems of analyzing and quantifying a surface acidity on a low surface area sample are disclosed. The methods include analyzing a quantity of an effluent molecular probe desorption from a temperature programmed desorption (TPD) process and system, by employing a mass spectroscopy (MS) system. The molecular probe is chemically adsorbed on a clean surface of the sample before the TPD process. The sample has a surface area to mass ratio of less than 5 m2/g. In some embodiments, the total surface area analyzed in the method can be as low as 3 m2.