TABLE 1.

Different reactions during DRM (Nikoo and Amin, 2011).

Reactions	ΔH298K kJ/mol	Ln (Keq) at 573K	Ln (Keq) at 1373K	Temperature where reaction occurs
CH4 + CO2 ⇌ 2CO + 2H2	247	−20	13	>973K
CO2 + H2 ⇌ CO + H2O	41	−5	2	>973K
2CH4 + 2CO2 ⇌ C2H4 +2CO + 2H2O	284	−36	0	>1473K
C2H6 ⇌ C2H4 + H2	136	−14	4	>1073K
2CH4 + CO2 ⇌ C2H6 + CO + H2O	106	−19	−5	>1473K
CO2 + 3H2 ⇌ CH3OH + H2O	−49.1	−12	−20	<573K
CO + 2H2 ⇌ CH3OH	−90.6	−10	−20	<573K
2CO ⇌ C + CO2	−172.4	15	−7	<973K
CH4 ⇌ C + 2H2	74.9	−6	5	>873K
H2 + CO ⇌ H2O+ C	−131.3	12	−6	<873K
CO2 + 2H2 ⇌ C + 2H2O	−90	8	−5	<973K
3H2O+ CH3OCH3 ⇌ 2CO2 + 6H2	136	20	37	>573K
CH3OCH3 + CO2 ⇌ 3CO + 3H2	258.4	10	40	>573K
2CH3OH ⇌ CH3OCH3 + H2O	−37	3	−1	<973K
CH3OCH3 + H2O ⇌ 2CO + 4H2	204.8	14	37	>573K
CO + 3H2 ⇌ CH4 + H2O	−206.2	14	−11	<873K
CO2 + 4H2 ⇌ CH4 + 2H2O	−165	14	−10	<873K