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渣油加氢脱金属催化剂的积炭分析

DOI: 10.11830/ISSN.1000-5013.2014.02.0180

Keywords: 渣油, 加氢脱金属, 催化剂, 积炭

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Abstract:

采用傅里叶红外光谱(FT-IR)、热重(TGA)和固体核磁(13C NMR)等方法,研究渣油加氢脱金属过程中积炭在催化剂上的沉积类型、沉积过程及其结构演变.结果表明:催化剂表面上的积炭可明显地分辩为两种不同类型的炭,即致密炭和疏松炭.在整个渣油加氢脱金属过程中,随着反应的进行,积炭结构逐步由富脂肪型炭向芳香型炭转变,积炭的前后沉积模式存在明显的“先快后慢”特征.

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