Catalytic Performance of Fe-Mn/SiO₂ Nanocatalysts for CO Hydrogenation

Table 7

Effect of different total reaction pressure on the catalytic performance of catalyst.

Pressure (bar)		1	2	3	4	5	6	7	8	9	10
CO conversion (%)		73.7	67.5	66.3	66.0	66.0	61.5	62.0	62.3	61.1	58.9
	CH4	15.3	14.7	14.3	14.0	13.7	12.8	11.7	10.6	10.3	10.3
	∑C2-C4	65.5	62.1	57	53.3	50.4	48.5	45.2	39.5	37.2	33.4
	C2H6	6.5	5.8	5.1	5.4	5.6	5.4	5.2	5.4	4.7	4.2
	C2H4	20.4	18.3	14.2	12.1	8.2	7.4	6.5	6.1	5.8	5.5
	C3H8	6.5	4.1	4.7	4.9	5.2	5.2	6.1	5.5	5.2	4.7
Product selectivity (%)	C3H6	12.1	11.7	11.4	10.0	8.7	7.8	6.6	5.9	6.3	5.5
	C4H10	5.2	5.8	6.3	6.8	6.9	8.4	7.4	6.3	5.8	5.4
	C4H8	14.9	16.4	15.3	14.1	15.8	14.3	13.4	10.3	9.4	8.1
	∑C5-C9	9.1	11.3	15.4	16.9	18.7	19.6	21.6	24.7	26.4	27.1
	C10+	7.2	9.5	10.9	12.3	13.7	14.3	16.5	20.0	20.6	23.5
	CO2	2.3	2.4	2.4	3.5	3.5	4.8	5.0	5.2	5.5	5.7
	C2-C4	2.6	3.0	2.5	2.1	1.9	1.6	1.4	1.3	1.4	1.3
Olefin/parrafin ratio	C2	3.1	3.2	2.8	2.2	1.5	1.4	1.3	1.1	1.2	1.3
	C3	1.9	2.9	2.4	2.0	1.7	1.5	1.1	1.0	1.2	1.2
	C4	2.9	2.8	2.4	2.1	2.3	1.7	1.6	0.7	1.6	1.5

Reaction conditions: H₂/CO = 3/2, GHSV = 1100 h⁻¹, and 𝑇=260°C.