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- Title
Preparation of High-Performance Zn-Based Catalysts Using Printing and Dyeing Wastewater and Petroleum Coke as a Carrier in Acetylene Acetoxylation.
- Authors
Chen, Yuhao; Li, Mengli; Xu, Zhuang; Shen, Guowang; Wang, Xugeng; Dai, Bin
- Abstract
In this study, novel Zn catalysts were prepared by the wet impregnation method using printing and dyeing wastewater (PDW)-modified petroleum coke (petcoke) as a carrier, and they were applied to the acetylene acetoxylation. The pretreated petroleum coke has a high specific surface area which provides sufficient space for the loading of Zn. Calcination further increases catalyst activity, but when calcination temperatures exceed 1000 °C, a significant loss of Zn occurs, resulting in a dramatic decrease in catalyst activity. This enables the conversion of acetic acid up to 85%. X-ray photoelectron spectroscopy confirmed that a large amount of N is introduced into PC from PDW, which changes the electron transfer around Zn. Temperature-programmed desorption (TPD) analysis revealed that the nitrogen-doped Zn(OAc)2 catalyst enhanced the catalytic activity by modulating the intensity of the catalyzed adsorption of acetic acid and acetylene. This study provides a new way to reuse petroleum coke and printing and dyeing wastewater to support the sustainable development of the vinyl acetate industry.
- Subjects
PETROLEUM coke; VINYL acetate; SEWAGE; X-ray photoelectron spectroscopy; ACETYLENE; ZINC catalysts
- Publication
Catalysts (2073-4344), 2023, Vol 13, Issue 3, p539
- ISSN
2073-4344
- Publication type
Article
- DOI
10.3390/catal13030539