Revealing ruthenium and basicity synergetic effects in Ru–MgAl catalysts for isomerization of linoleic acid to conjugated linoleic acid

Abstract

Ru-MgAl catalysts were prepared by co-precipitation at different pH values (x ¼ 7-12), with the aims of investigating the effect of pH on their catalytic performance for isomerization of linoleic acid to conjugated linoleic acid and of understanding the relationship of basicity site and ruthenium activity site.The results showed that strong basicity and highly dispersed ruthenium may be the active sites for linoleic acid isomerization. Only if all three conditions, i.e., high Ru dispersion, appropriate SMSI effect and high number of strong basicity sites, are fulfilled can highly effective active sites be formed for the isomerization of linoleic acid to conjugated linoleic acid. A possible reaction mechanism for the isomerization was also proposed.

Identification of Adulterated Evening Primrose Oil Based on GC‐MS and FT‐IR Combined with Chemometrics

“…C18:2 is closely related to treating diseases such as arteriosclerosis, breast cancer, and prostate cancer. [29,30] The content of C18:2 in this study was comparatively lower than that measured by Zhao et al [31] This may be attributed to the differences in varieties, planting locations and oil extraction methods of evening primrose. EPO is an essential source of C18:3n6.…”

Removal of Hydrogen Poisoning by Electrostatically Polar MgO Support for Low-Pressure NH3 Synthesis at a High Rate over the Ru Catalyst

“…The chemisorption uptake of CO and H were measured to examine the effect of hydrogen spillover where the ratio of Ru: CO/H = 1 is assumed 11,12 . The samples were measured on a Micromeritics ASAP 2020 (M+C) analyzer.…”