Designing Hierarchical ZSM-5 Materials for Improved Production of LPG Olefins in the Catalytic Cracking of Triglycerides

Table 2

Catalytic performance of the studied ZSM-5 materials in the cracking of triolein.

Sample	C-Z	N-Z	M-Z-AAT	M-Z-AT	P-Z
Conversion (wt.%)^a	70.9	85.9	88.2	86.4	88.7
Product yields (wt.%)^a
Gas	28.0	41.6	42.2	41.3	43.3
Dry gas	2.3	6.4	5.8	7.6	7.8
LPG	18.0	28.7	31.0	28.3	30.5
Propane	0.6	3.4	3.0	5.8	6.3
Propene	7.8	12.2	14.2	10.2	11.9
Butanes	0.5	3.1	2.7	4.8	4.5
Butenes	9.2	10.0	11.0	7.5	7.8
LPG paraffins	1.1	6.5	5.7	10.6	10.8
LPG olefins	16.9	22.2	25.2	17.7	19.7
CO/CO2	7.6	6.5	5.4	5.5	5.0
Gasoline	35.2	37.0	38.3	36.9	37.3
LCO	18.7	9.4	7.4	7.2	6.7
HCO	10.4	4.7	4.4	6.4	4.6
Coke	1.6	1.0	1.3	1.8	1.2
Water	6.1	6.3	6.4	6.3	6.9
Olefinicity (wt.%)^b
C3=/total C3	92.9	78.2	82.4	63.5	65.3
C4=/total C4	94.8	76.6	80.2	61.3	63.7

^awt.% on feed basis; ^bwt.% on product basis.