公开(公告)号：US20150174554A1

公开(公告)日：2015-06-25

申请号：US14575035

申请日：2014-12-18

Applicant: Scientific Design Company, Inc.

Inventor： Lixin Cao ,  Andrzej Rokicki

IPC: B01J23/68

CPC classification number: B01J23/688 ,  B01J23/50 ,  B01J31/00 ,  B01J35/1009 ,  B01J37/0203 ,  B01J37/0207 ,  B01J37/0213 ,  B01J37/06

Abstract: A silver impregnation solution comprising: (i) silver ions, (ii) a silver concentration enhancer selected from at least one ammonium salt having an anionic component that is thermally decomposable; or at least one amino acid, or a combination thereof, (iii) at least one organic amine; and (iv) water; wherein said components (i)-(iii) are dissolved in said impregnation solution, and oxalic acid may or may not be included. The silver impregnation solution can achieve significantly higher silver concentrations, including at least or above 33, 34, or 35 wt %. Methods for producing a silver catalyst by silver impregnation of a refractory support followed by calcination are also described. The resulting silver catalysts possess high silver loadings of typically at least 17, 18, or 19 wt %.

Abstract translation: 一种银浸渍溶液，其包含：（i）银离子，（ii）选自至少一种具有可分解阴离子组分的铵盐的银浓度增强剂; 或至少一种氨基酸，或其组合，（iii）至少一种有机胺; 和（iv）水; 其中所述组分（i） - （iii）溶解在所述浸渍溶液中，并且可以不包括草酸。 银浸渍溶液可以获得显着更高的银浓度，包括至少或高于33,34或35重量％。 还描述了通过浸渍耐火载体然后煅烧来生产银催化剂的方法。 所得到的银催化剂具有通常至少17,18或19重量％的高银负载量。

公开(公告)号：US10300462B2

公开(公告)日：2019-05-28

申请号：US14575035

申请日：2014-12-18

Applicant: Scientific Design Company, Inc.

Inventor： Lixin Cao ,  Andrzej Rokicki

IPC: B01J23/48 ,  B01J23/50 ,  B01J23/68 ,  B01J37/02 ,  B01J37/06 ,  B01J31/00 ,  B01J35/10

Abstract: A silver impregnation solution comprising: (i) silver ions, (ii) a silver concentration enhancer selected from at least one ammonium salt having an anionic component that is thermally decomposable; or at least one amino acid, or a combination thereof, (iii) at least one organic amine; and (iv) water; wherein said components (i)-(iii) are dissolved in said impregnation solution, and oxalic acid may or may not be included. The silver impregnation solution can achieve significantly higher silver concentrations, including at least or above 33, 34, or 35 wt %. Methods for producing a silver catalyst by silver impregnation of a refractory support followed by calcination are also described. The resulting silver catalysts possess high silver loadings of typically at least 17, 18, or 19 wt %.