摘要:
Mesoporous carbon has a beaded structure in which primary particles with mesopores are linked. In the mesoporous carbon, an average primary particle size is 7 nm or more and 300 nm or less, a pore diameter is 2 nm or more and 10 nm or less, an average thickness of pore walls is 3 nm or more and 15 nm or less, a pore volume is 0.2 mL/g or more and 3.0 mL/g or less, and a tap density is 0.03 g/cm 3 or more and 0.3 g/cm 3 or less. In a polymer electrolyte fuel cell, the mesoporous carbon is used as a catalyst carrier for at least an air electrode catalyst layer. The mesoporous carbon can be obtained by impregnating mesoporous silica satisfying a predetermined condition with a carbon source, performing polymerization and carbonization, and removing a template.
摘要:
Mesoporous carbon (10) has a connecting structure in which primary particles (12) made of carbon particles having primary pores with a primary pore diameter of less than 20 nm are connected. In the mesoporous carbon (10), the pore capacity of secondary pores (14) with secondary pore diameters within a range of 20 nm to 100 nm, which is measured by a mercury intrusion method, is 0.42 cm 3 /g or more and 1.34 cm 3 /g or less. In addition, the mesoporous carbon (10) has a linearity of 2.2 or more and 2.6 or less. An electrode catalyst for a fuel cell includes the mesoporous carbon (10) and catalyst particles supported in the primary pores in the mesoporous carbon (10). Furthermore, a catalyst layer includes the electrode catalyst for the fuel cell and a catalyst layer ionomer.
摘要:
Mesoporous carbon (10) has a connecting structure in which primary particles (12) made of carbon particles having primary pores with a primary pore diameter of less than 20 nm are connected. In the mesoporous carbon (10), the pore capacity of secondary pores (14) with secondary pore diameters within a range of 20 nm to 100 nm, which is measured by a mercury intrusion method, is 0.42 cm 3 /g or more and 1.34 cm 3 /g or less. In addition, the mesoporous carbon (10) has a linearity of 2.2 or more and 2.6 or less. An electrode catalyst for a fuel cell includes the mesoporous carbon (10) and catalyst particles supported in the primary pores in the mesoporous carbon (10). Furthermore, a catalyst layer includes the electrode catalyst for the fuel cell and a catalyst layer ionomer.
摘要:
To provide a carbon support for catalysts for fuel cells, which increases the power generation performance of fuel cells, a catalyst for fuel cells, a catalyst layer for fuel cells, and a method for producing the carbon support. A carbon support for catalysts for fuel cells, wherein the carbon support includes at least one pore; wherein a thickness of a carbon wall of the carbon support, which is derived from a three-dimensional pore structure of a silica mold obtained by pore volume measurement of the silica mold by nitrogen adsorption analysis, is 3.3 nm or more and 11.2 nm or less; and wherein a carbon wall content is more than 60.3 ml/g and less than 190.8 ml/g.
摘要:
A material for trapping a target substance, which is capable of selectively trapping a target substance such as a sludge or a sludge precursor contained in a liquid organic compound such as an engine oil or in a gas such as a blow-by gas (combustion gas). A material for trapping a target substance, which traps a target substance contained in a liquid organic compound or a gas, the material comprising a mesoporous inorganic material having a plurality of pores.