6.4 Zeolite-Based Catalysts for the Conversion …
135
Table 6.3
Catalytic performances of Mo and Re catalysts supported on various porous materials
H +
-exchanged
zeolite
or support
Si/Al
ratio
Pore
diameter/Å
Dimensionality
of pores
Number of
members
in rings
3 wt% Mo
5 wt% Re
CH
4
conversion/%
Benzene
formation
rate/μmol g −1
s −1
CH
4
conversion/%
Benzene
formation
rate/μmol g −1
s −1
H-ZSM-5
19.5
5.4
× 5.6,
5.1
× 5.3
3
10
8.1
0.73
10.1
1.63
H-ZRP-1
25
5.6
× 5.6,
5.1
× 5.5
3
10
8.9
0.95
7.3
0.13
H-MCM-22
18
5.5
× 4.0,
5.1
× 4.1
2
10
8.0
0.55
5.3
0.61
H-ZSM-11
19
5.3
× 5.4
3
10
6.3
0.57
5.1
0.35
H-ß
18.5
5.6
× 5.6,
6.4
× 7.6
3
10
4.1
0.14
4.6
0.11
H-ZSM-12
20
6.0
× 5.6
1
12
4.3
0.11
2.9
0.10
H-Ferrierite
32
5.4
× 4.2,
4.8
× 3.5
2
10, 8
5.3
0.12
3.9
0.10
H-LTL
3
7.1
3
12
0.4
0.05
4.3
0.03
H-FSM-16
150
27
1
16.9 a
0.03 a
Not available
Not available
Al
2 O
3
–
–
–
–
8.3
0.05
3.1
0.06
SAPO-5
–
7.3
1
12
4.3
0.05
3.2
0.01
Reprinted from ref. [26], Copyright 2020, with permission from Elsevier
Reaction conditions: 973 K; flow rate
= 3000 mL g −1
h −1
, 0.3 MPa, 2% CO
2, rates of benzene formation at 2 h time on stream
a
Without CO
2 addition