Calculation Of Nitrogen Heat Adsorption On Various Catalysts Usingbet-Constant (Bet-0 Data)

Triyono
Wega Trisunaryanti
Oberlin Sidjabat

Scientific Contribution Oil and Gas
Vol. 31 No. 3 (2008): SCOG

BET-C (Brunauer-Emmett-Teller-Constant) was used to calculate the heat of adsorp-tion (AHaijj of nitrogen gas on the various catalysts. The -well-known Brunauer-Emmett-Teller (B.E.T.) equation is usedprimarily to determine the surface area from the physicaladsorption of a gas on a solid surface. Surface area of catalysts -was determined by usingsurface area analyzer (NOVA 1000). The BET-C included in the data is usually neglected or is not taken into accoimt. How-evei; by using the basic principles of the adsorption theory fitted ivith the functions basedon the BET adsorption model, the iniportant data of BET-C can be shoivn in this study. Thevalue of the AHa(h (NJ for zeolite, H-zeolite, Pt/zeolite, Pt-Pd/zeolite, and Pt-Ce/zeolitecalculatedfrom the equation derivedfrom BET-C are -6.43, -6.52, -8.78, -8.69, -9.71 and-9.52 kJ/mol, respectively.