PROBLEM TO BE SOLVED: To provide a method for efficiently producing a fired shell capable of generating carbon radicals.SOLUTION: The shell of a scallop is crushed to obtain a shell crushed product. Thereafter, the shell crushed product is subjected to firing (single firing) at a holding temperature of 580 to 620°C in a nonoxidizing atmosphere. The fired shell crushed product, which is obtained thereby, contains organic components by &ge1.5 wt.%, and carbon radicals are continuously generated as a result of the remaining organic components.COPYRIGHT: (C)2012,JPO&INPIT【課題】カーボンラジカルを発生させる焼成貝殻を効率的に製造することができる方法を提供する。【解決手段】ホタテの貝殻を粉砕し、貝殻粉砕物を得た後、この貝殻粉砕物を非酸化性雰囲気の下、保持温度580~620℃で焼成する(1回の焼成)。これにより得られる焼成貝殻粉砕物は、有機成分を1.5重量%以上含有し、この残存有機成分に起因してカーボンラジカルが持続的に発生する。【選択図】 なし
