Deactivating Species Deposited on Pt-Pd Catalysts in the Hydrocracking of Light-Cycle Oil

被引：59

作者：

Castano, Pedro ^{[1
]}

Gutierrez, Alazne ^{[1
]}

Hita, Idoia ^{[1
]}

Arandes, Jose M. ^{[1
]}

Aguayo, Andres T. ^{[1
]}

Bilbao, Javier ^{[1
]}

机构：

[1] Univ Basque Country UPV EHU, Dept Chem Engn, Bilbao 48080, Spain

来源：

ENERGY & FUELS | 2012年 / 26卷 / 03期

关键词：

HIGH-QUALITY DIESEL; NOBLE-METAL; COKE CHARACTERIZATION; UPGRADING LCO; HYDROGENATION; BIOETHANOL; STABILITY; AROMATICS; METHANOL; FUEL;

D O I：

10.1021/ef2019676

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

The nature and composition of the coke deposited on Pt-Pd catalysts supported on acid carriers during the hydroprocessing (hydrocracking and hydrotreating) of light-cycle oil (LCO) has been studied. Five types of supports have been used: a commercial cracking catalyst, alumina, H beta zeolite, and two HY zeolites (with different acidities). The hydrocracking runs have been performed at 350 degrees C and 50 bar for up to 24 h. The characterization of the deactivating species on the catalyst used has been performed using temperature-programmed oxidation (TPO) coupled with mass spectrometry (MS) and Fourier transformed infrared (FTIR) spectroscopy, ultraviolet visible (UV-vis) spectroscopy, and comprehensive two-dimensional gas chromatography/mass spectrometry (GC X GC/MS) analysis of the soluble coke extracted from the deactivated catalyst. The complex composition of the coke has been simplified in three families, each related to a different composition and location. The composition of the coke (and the amount of each type of coke) strongly depends upon the catalyst properties, particularly the features of the support: acidity and micropore topology.

引用

页码：1509 / 1519

页数：11

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