化学专业英语翻译

Two materials were used as supports for noble metals:
a Zr-doped mesoporous silica with a Si/Zr molar ratio of
5, which was prepared essentially according to the
method described elsewhere [24,36], but by stirring the
suspension for one day only to speed up the synthesis.
The second support was a commercial mesoporous alumina
silica prepared by sol-gel method (40:60 w/w),
provided by Engelhard. The supports were calcined at
550
C (1
C min)1 heating rate) for 6 h and were
denoted as SiZr and SiAl, respectively. The Pd/Pt and
Pd/Rh catalysts, with different atomic ratios, were prepared
by incipient wetness impregnation using suspensions
of nanometric particles in diethylene glycol (DEG),
which were prepared by polyol-mediated synthesis
method as reported elsewhere [37]. The average particle
sizes were measured by dynamic light scattering using a
Malvern Zetasizer Nano S. After impregnation the catalysts