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To improve the stability of the a CaO catalyst with high activity in the synthesis of dimethyl carbonate (DMC) at low‐temperatures via the transesterification of propylene carbonate (PC) with methanol, a series of Co‐doped CaO nanoparticles were synthesized with different cobalt contents via the sol‐gel method, and the catalytic performance of these catalysts increased in the order of 0.7Ca0.3Co<0.8Ca0.2Co

Bimetallic Ni-Co/SAPO-11 catalysts were prepared and investigated for hydrodeoxygenation (HDO) of fatty acid methyl esters (FAMEs) and sequential isomerization of the products in a continuous fixed-bed reactor. The physicochemical properties of the catalysts were characterized by means of N 2 adsorption-desorption, temperature-programmed reduction of H 2 , temperature-programmed desorption of NH 3 , infrared spectra of adsorbed pyridine, and thermogravimetry. The conversion of FAMEs and selectivity of C 15-18 are enhanced over the bimetallic Ni-Co/SAPO-11 catalysts compared with that of the corresponding monometallic counterparts, which is attributed to the modification effect by Co species. The balance between metal Ni and Co and the acidity of the support plays an important role in the catalytic performance. The Ni-Co/SAPO-11 catalysts with composition of 3% Ni and 6% Co exhibit optimal catalytic performance, specifically the conversion of FAMEs, selectivity of C 15-18 , and isomerization ratio of C 15-18 , respectively, reaching 100.0%, 93.0%, and 36.1% at 400 C and 1

This paper, based on the forty-three indicators of animal Physiology welfare, including environmental welfare, health welfare, mental welfare and behavioral welfare , totally five aspects as the subject, established the evaluation model of animal welfare management in zoos, and used Triangular Fuzzy Number Analytic Hierarchy Process to draw the weights of various evaluation factors, the results indicates that physical welfare, environmental welfare, health welfare, mental welfare and behavioral welfare in the respective weights are 0.251,0.222,0.179,0.182,0.166; Through the applicated evaluation of the welfare in Heilongjiang Northeast Tiger Animals Garden, it indicates that Heilongjiang Northeast Tiger Garden of animal welfare is in good conditions and is in line with the actual situation, which illustrates this method can be used in evaluation of zoo animal welfare management.