Hp. Tian et al., CATALYTIC BEHAVIOR IN SKELETAL ISOMERIZATION OF LINEAR BUTENES AND ACIDIC PROPERTIES OF AN I-PR2NH-TEMPLATED SAPO-11 MOLECULAR-SIEVE, Reaction kinetics and catalysis letters, 64(1), 1998, pp. 119-127
SAPO-11 samples were synthesized with i-Pr2NH as a novel template, and
applied in catalytic skeletal isomerization of linear butenes. More l
inear butenes were converted with increasing Si content in SAPO-11 sam
ples, while the isa-butene selectivity was proportional to the Si cont
ent only in the lower reaction temperature region. The maximum yield o
f iso-butene was achieved around 763 K. The acidic properties of SAPO-
11 samples were studied by NH3-TPD and IR spectroscopy. The strong aci
dity was due to the formation of Si domains in the framework lattice.