Open Access Open Access  Restricted Access Subscription Access

Nâng cao hoạt tính xúc tác của perovskit La0,4Sr0,6CoO3 đối với phản ứng DeNOx bằng cách pha tạp ion bạc.

Trần Thị Minh Nguyệt, Nguyễn Quang Huấn, Hà Phương Thư, Nguyễn Doãn Thai, Nguyễn Quốc Trung, Trần Quế Chi, Đỗ Thế Chân, Trần Văn Quí

Abstract


Mixed oxides of La, Sr, Co and Ag were prepared by sol-gel method using acid citrat as solvent. Two kinds of obtained mixed oxides A = La1-xSrxCoO3+La2O3+SrO+Co3O4+ SrCoOx and B = A+Ag were characterizied by X-Ray Diffraction analysis (XRD), Field Emision Scanning Electron Microscope (FESEM), Energy Dispersive X-ray Spectroscopy (EDS). Their catalytic activity was studied by Temperature Programmed Surface Reaction (TPSR). The results shown that the mixed oxide A exhibits a weak DeNOx activity, but in the addition of a little of metal silver (Ag), the NOx conversion increases remakably from 29.4% (in absence Ag) to 82.4% at 220oC.


Display counter: Abstract : 72 views. PDF (Tiếng Việt) : 0 views.