Methanol Aromatization over Zn and Ce Modified Hierarchical ZSM-5 Catalysts: Effect of Ce as a Promoter

Table 1

Production distribution of MTA reaction over different catalysts.

Catalysts	XMeOH^a (%)	Selectivity^a (%)
		Olefins^b	Paraffins^c	C5+^d	Aromatics	Others^e
Z	100	8.5	43.7	8.3	38.7	0.8
HZ	100	5.1	39.7	11.2	43.5	0.5
1% Zn/HZ	100	6.7	32.4	7.5	52.8	0.6
2% Zn/HZ	100	6.5	22.7	5.9	64.0	0.9
3% Zn/HZ	100	9.0	26.5	9.2	55.4	0.7
0.6% Ce/HZ	100	8.2	38.9	11.7	42.9	0.7
2% Zn-0.3% Ce/HZ	100	6.6	16.4	6.1	70.5	0.4
2% Zn-0.6% Ce/HZ	100	5.5	12.4	5.6	75.9	0.6
2% Zn-0.9% Ce/HZ	100	8.8	17.0	7.2	66.4	0.6

^a The data was obtained at 0.5 h of time on stream. Reaction conditions: P = 0.1 MPa, T = 400°C, WHSV = 1.0 h⁻¹.^b Including C₁–C₄ olefins.^c Including C₁–C₄ paraffins.^d Including all the olefins and paraffins with more than five carbon atoms.^e Including CO, CO_2, and coke.