To provide an adsorptive material for an adsorptive heat pump capable of adsorbing/desorbing an adsorbate at a comparatively low relative vapor pressure region, and driving with, e.g., the heat source temperature of the low temperature side of 45°C, and the heat source temperature of the high temperature side of 60°C or less, and the adsorptive heat pump of high efficiency using the adsorptive material.

This adsorptive material for the adsorptive heat pump comprises zeolite containing aluminum, phosphorus and iron as a structural skeleton. A frame work density is larger than 16.0T/1,000 Å3and equal to or smaller than 19.0T/1,000 Å3. When adsorption temperature (Ta) of steam is set to 25-45°C, desorption temperature Td of steam and cold creating temperature (Tcool) satisfy the following expressions (1), (2), and a difference of steam adsorption amounts at the adsorption temperature (Ta) and at the desorption temperature (Td) is 0.1g/g or more.

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