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The Effect of Catalyst Calcination Temperature on Catalytic Decomposition of HFC-134a over γ-Al 2 O 3.
- Source :
- Catalysts (2073-4344); Sep2021, Vol. 11 Issue 9, p1021, 1p
- Publication Year :
- 2021
-
Abstract
- This paper explores the thermal and catalytic pyrolysis of HFC-134a over γ-Al<subscript>2</subscript>O<subscript>3</subscript> calcined at temperatures of 550 °C (A550), 650 °C (A650), 750 °C (A750), and 850 °C (A850). The physicochemical properties of catalysts were studied through thermogravimetric analysis (TGA), Brunauer–Emmett–Teller equation for nitrogen physisorption analysis (BET), X-ray diffraction (XRD), and temperature-programmed desorption of ammonia (NH<subscript>3</subscript>-TPD). The non-catalytic pyrolysis of HFC-134a showed less than 15% decomposition of HFC-134a. Catalysts increased the decomposition as A650 revealed the highest decomposition efficiency by decomposing more than 95% HFC-134a for 8 h followed by A750, A850, and A550. The larger surface area and pore volume paired with a low amount of strong acidic sites were considered as the main contributors to the comparatively longer catalytic activity of A650. [ABSTRACT FROM AUTHOR]
- Subjects :
- NITROGEN analysis
CATALYTIC activity
CATALYSTS
THERMOGRAVIMETRY
SURFACE area
Subjects
Details
- Language :
- English
- ISSN :
- 20734344
- Volume :
- 11
- Issue :
- 9
- Database :
- Complementary Index
- Journal :
- Catalysts (2073-4344)
- Publication Type :
- Academic Journal
- Accession number :
- 152687510
- Full Text :
- https://doi.org/10.3390/catal11091021