公开(公告)号：US20170182476A1

公开(公告)日：2017-06-29

申请号：US15392176

申请日：2016-12-28

Applicant: EURECAT S.A

Inventor： Pierre DUFRESNE ,  Pauline GALLIOU ,  Mathieu BAFFERT ,  Fabien LABOULFIE

IPC: B01J20/26 ,  B01J21/04 ,  B01J31/34 ,  B01J31/06 ,  B01J20/32 ,  B01J35/02 ,  B01J37/02 ,  B01J20/08 ,  B01J20/28 ,  B01J23/882 ,  B01J35/00

CPC classification number: B01J20/261 ,  B01J2/006 ,  B01J20/08 ,  B01J20/28016 ,  B01J20/3204 ,  B01J20/3231 ,  B01J20/3293 ,  B01J21/04 ,  B01J23/85 ,  B01J23/882 ,  B01J23/883 ,  B01J23/888 ,  B01J23/94 ,  B01J31/06 ,  B01J31/34 ,  B01J33/00 ,  B01J35/0006 ,  B01J35/002 ,  B01J35/023 ,  B01J35/026 ,  B01J35/1019 ,  B01J35/1038 ,  B01J35/1042 ,  B01J35/1061 ,  B01J37/0219 ,  B01J37/0221 ,  B01J37/0232

Abstract: A process is disclosed for limiting the emissions of gases from a porous material in the form of particles comprising a porous inorganic support and at least 0.1% by weight of one or more compounds chosen from organic compounds, halogen compounds, boron compounds and phosphorus compounds. The particles are placed in motion within a hot gas stream traversing them, and a liquid composition containing one or more film-forming polymer(s) is sprayed over the moving particles by means of a twin-fluid atomization nozzle, in which the liquid composition is mixed with a pressurized gas, with a relative atomization pressure of greater than or equal to 0.7×105 Pa, until a protective layer containing the film-forming polymer(s) and exhibiting a mean thickness of less than or equal to 20 μm is obtained on the surface of the said particles. A material resulting from this process is also disclosed.