... The first industrialized catalytic reforming method was called hydroforming, and was carried out under conditions of 450-550°C and 10-20 atm using molybdenum oxide supported on alumina as a catalyst. However, it was impossible to prevent the catalyst from becoming deactivated by carbon deposition, and frequent catalyst regeneration (blowing in air to burn and remove the carbonaceous deposits) was necessary. Eventually, in 1949, the platforming method was developed, and a catalyst was developed in which platinum was highly dispersed and supported on acidic alumina. This catalyst was less prone to deactivation by carbon deposition, and regeneration operations were only required once every six months to a year. ... *Some terminology explanations that mention "platforming" are listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
… 最初に工業化された接触改質法はハイドロフォーミングhydroforming法といい,アルミナを担体とする酸化モリブデンを触媒として,450~550℃,10~20気圧の条件で行われたが,触媒の炭素析出による失活が防ぎきれず,頻繁に触媒再生(空気を吹き込み炭素状析出物を燃焼,除去する)が必要であった。やがて1949年にプラットフォーミングplatforming法が開発され,酸性のアルミナに白金を高度に分散担持させた触媒が開発された。この触媒は炭素析出による失活が少なく,再生操作は半年~1年に1度ですむようになった。… ※「platforming」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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