writer：Tai-cheng An, Yu-feng He , Yan-jun Fang , Xing-long Jin , Hui Chen
keywords：Phase-transfer catalysis; Synthesis; Porphyrins; Metalloporphyrins; Aromatic aldehydes; Photocatalytic oxidation; Dynamics
source：期刊
specific source：Elsevier Science B.V.
Issue time：2000年

A meso-tetra-[4-( p-toluene-sulfonyloxy)phenyl] porphyrin (H₂TTSOPP)was synthesized under the condition of phase-transfer catalyst. The complexes of cobaltII. and manganese(II) were also synthesized. All of the synthesized
products were characterized by elemental analysis, electronic absorption spectrum, IR spectrum and proton magnetic resonance spectrum. The oxidation of aromatic aldehydes with O₂ was likewise investigated in the presence of porphyrin
complexes, which were used as photocatalysts under illuminated with 450 W high-pressure mercury lamp(HPML). The
oxygen uptaking volume was measured during the reaction process. It was observed that the complex could catalyze the
oxidation of aromatic aldehydes. The photocatalytic oxidation kinetics of p-chlorobenzaldehyde was also investigated. It
was found that apart from the first sampling time — which was included in the induction period — the disappearance of
p-chorobenzaldehyde thoroughly conformed with first-order kinetics, and the kinetics decay constant was 0.00561 min^-1,
while the lifetime was 134.3 min.