Enhanced Heavy Oil Recovery in Mild Conditions by /- Solid Superacid Prepared by Different Methods

Table 1

Results of N₂ adsorption-desorption measurement of catalysts ZT-I, ZT-H, and ZT-H-C.

Sample	Pore radius (nm)	Total pore volume (cc/g)		Surface area (m^2/g)
ZT-I	2.80	0.10	0.99	72.09
ZT-H	5.38	0.06	0.99	20.16
ZT-H-C	43.20	17.44	0.99	80.74