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無水合成粉末から高度に b 方向の MFI ゼオライトフィルムの溶媒のない二次成長
Xiaofei Lu1, Yanwei Yang1, Junjia Zhang1
1Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology, College of Chemical and Biological Engineering , Zhejiang University , Hangzhou 310027 , P. R. China.
Journal of the American Chemical Society
|February 12, 2019
まとめ
研究者は,指向型MFIゼオライトフィルムを作るための新しい溶剤フリー方法を開発しました. この技術では,粉砕された原材料とフッ素アモニアム (NH4F) を使用し,高品質のゼオライトフィルム製造のための新しい経路を提供します.
科学分野:
- 材料科学
- 化学工学
- クリスタルグラフィー
背景:
- ゼオライト膜は分離膜と触媒に不可欠です.
- 現在の製造方法には,現地結晶化,溶液中の二次成長,蒸気相変換が含まれています.
- これらの方法はしばしば複雑な手順や厳しい条件を伴う.
研究 の 目的:
- ベータ指向のMFIゼオライトフィルムを製造するための新しい,溶媒のない二次成長方法を導入する.
- ゼオライト膜の合成のために無水素原材料とフッ素アンモニアム (NH4F) を使用する可能性を実証する.
- 高品質のゼオライトフィルムと膜の生産の可能性を探求する.
主な方法:
- 溶媒のない二次成長で,無水素の固体から合成された粉末を使用しています.
- ミネラライザーとしてアンモニアム・フッ素 (NH4F) を組み込む.
- 精密ベータ指向のMFIゼオライト膜をシード層に175°Cで6時間間合成する.
- 合成時間またはNH4F含有量の調整
主要な成果:
- ベータ指向のMFIゼオライトフィルムの製造に成功
- 植え付けによる正確な方向制御の実証
- 合成パラメータを変更することによって多層フィルムを生成する能力.
- この方法は従来の水熱合成のステップを回避しています.
結論:
- 開発された溶媒のない二次成長方法は,高品質のベータ指向のMFIゼオライトフィルムを生産するのに有効です.
- このアプローチは従来型のゼオライトフィルム合成よりも 単純で環境に優しい代替手段です
- この技術は,高度なゼオライト膜の製造のための新しい道を開きます.
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