In the current study,photocatalytic hydrogen production from water under visible light irradiation over Eosin Y-Pt catalyst supported on high specific area SiO2 has been achieved in the presence of electron donor such...In the current study,photocatalytic hydrogen production from water under visible light irradiation over Eosin Y-Pt catalyst supported on high specific area SiO2 has been achieved in the presence of electron donor such as Triethanolamine(TEOA).The optimal pH and concentration of Eosin Y were about 7 and 7.24 × 10-4 mol·L-1,respectively.The highest rate of hydrogen evolution and the highest apparent quantum efficiency under irradiation with a wavelength longer than 420 nm was about 43 μmol·h-1 and 10.4%,respectively.展开更多
Coupled hydrogenation and selective ring-opening of tetralin was investigated over Pt/Y and Pt/USY catalysts at hydrogen pressures(4.0 MPa).The results indicated that hydrogenation of tetralin could be achieved over b...Coupled hydrogenation and selective ring-opening of tetralin was investigated over Pt/Y and Pt/USY catalysts at hydrogen pressures(4.0 MPa).The results indicated that hydrogenation of tetralin could be achieved over both Pt/Y and Pt/USY,and the acid strength of the supports played an important role in the ring-opening reactions.Compared to USY,Y was a better support for ring-opening,due to its relatively weak acid strength.In conclusion, a support with mild acid strength would favor the ring opening of tetralin.展开更多
文摘In the current study,photocatalytic hydrogen production from water under visible light irradiation over Eosin Y-Pt catalyst supported on high specific area SiO2 has been achieved in the presence of electron donor such as Triethanolamine(TEOA).The optimal pH and concentration of Eosin Y were about 7 and 7.24 × 10-4 mol·L-1,respectively.The highest rate of hydrogen evolution and the highest apparent quantum efficiency under irradiation with a wavelength longer than 420 nm was about 43 μmol·h-1 and 10.4%,respectively.
文摘Coupled hydrogenation and selective ring-opening of tetralin was investigated over Pt/Y and Pt/USY catalysts at hydrogen pressures(4.0 MPa).The results indicated that hydrogenation of tetralin could be achieved over both Pt/Y and Pt/USY,and the acid strength of the supports played an important role in the ring-opening reactions.Compared to USY,Y was a better support for ring-opening,due to its relatively weak acid strength.In conclusion, a support with mild acid strength would favor the ring opening of tetralin.
