http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Reduction of Carbon dioxide by Toluene over Supported Metal Catalysts
Song, Yo Soon,Masaru, Ichikawa 全南大學校 觸媒硏究所 2002 觸媒硏究 論文集 Vol.23 No.-
The study on the reduction of carbon dioxide by toluene was carried out at 500 - 600 ℃ over Pd/γ-Al_2O_3, Pd-Me/γ-Al_2O_3, Ni/SiO_2-Al_2O_3, Ni-W/SiO_2-Al_2O_3, and Rh_6(CO)_16/NaY zeolite catalysts. Palladium-cerium cosupported catalyst showed good activity for the formation of carbon monoxide and benzene. The activity for production of carbon monoxide and benzene on palladium-promoter catalysts was in the order of Pd-Ce > Pd-La > Pd-Ca > Pd-Cr > Pd-Zr > Pd-Pb > Pd-Tl. Nickel Catalyst showed high activity for the production of carbon monoxide at 600℃. Ni-W catalysts had a good selectivity to benzene. Specially rhodium carbonyl cluster catalysts supported in Y type zeolite was high yield of carbon monoxide, but very low in benzene. Most catalysts showed deactivation with reaction time on stream, but in case of Pd-Ce/Al_2O_3 catalyst the deactivation to form the of both carbon monoxide and benzene was less effective than other catalysts.
Akitoshi Makino,Keiichi Yamaguchi,Daichi Sumi,Masaru Ichikawa,Masumi Ohno,Kazushige Goto 한국운동영양학회 2022 Physical Activity and Nutrition (Phys Act Nutr) Vol.26 No.1
[Purpose] The present study compared energy metabolism between walking and running at equivalent speeds during two incremental exercise tests. [Methods] Thirty four university students (18 males, 16 females) were recruited. Each participant completed two trials, consisting of walking (Walk) and running (Run) trials on different days, with 2-3 days apart. Exercise on a treadmill was started from initial stage of 3 min (3.0 k/m in Walk trial, 5.0 km/h in Run trial), and the speed for walking and running was progressively every minute by 0.5 km/h. The changes in metabolic variables, heart rate (HR), and rating of perceived exertion (RPE) during exercise were compared between the trials. [Results] Energy expenditure (EE) increased with speed in each trial. However, the Walk trial had a significantly higher EE than the Run trial at speeds exceeding 92 ± 2 % of the maximal walking speed (MWS, p < 0.01). Similarly, carbohydrate (CHO) oxidation was significantly higher in the Walk trial than in the Run trial at above 92 ± 2 %MWS in males (p < 0.001) and above 93 ± 1 %MWS in females (p < 0.05). [Conclusion] These findings suggest that EE and CHO oxidation during walking increase non-linearly with speed, and walking at a fast speed causes greater metabolic responses than running at the equivalent speed in young participants.