Abstract: Provided are a humidity conditioning material that adsorbs and desorbs a large amount of moisture, and a production method thereof. A humidity conditioning material comprising: a porous silica material having an average pore diameter of 1 nm or more; and a carrier, wherein the humidity conditioning material contains an alkali metal element in an amount of 0.001 wt % or more and less than 1.0 wt %. A method for producing a humidity conditioning material involving the following Step (1), Step (2), and Step (3). Step (1): A dispersion medium is mixed with a porous silica material having an average pore diameter of 1 nm or more to obtain a slurry, and an amount of alkali metal element in the slurry is adjusted to be 0.001 wt % to 1 wt % relative to a solid content weight therein. Step (2): The slurry obtained in Step (1) is applied to a carrier.

Abstract: A method for producing propylene oxide which comprises reacting propylene, oxygen and hydrogen, in the presence of a titanosilicate and a noble metal supported on silylated active carbon, in a solvent.

Abstract: A method for producing an oxidized compound according to the present invention comprises reacting an organic compound with an oxidizing agent in the presence of titanosilicate (I) or a silylated form thereof, the titanosilicate (I) being obtained by contacting titanosilicate (II) with a structure-directing agent, and the titanosilicate (II) having an X-ray diffraction pattern reproduced in the form of interplanar spacings d of 1.24±0.08 nm, 1.08±0.03 nm, 0.9±0.03 nm, 0.6±0.03 nm, 0.39±0.01 nm and 0.34±0.01 nm.

Abstract: A method for producing propylene oxide according to the present invention comprises a step of reacting propylene with oxygen in the presence of water, a halogen compound, and a silver catalyst containing alkaline earth metal carbonate as a support, the silver catalyst having 10 ?mol/g or more oxygen adsorption capacity. This provides an industrially advantageous method for producing olefin oxide.