Knowledge Management System Of Institute of process engineering,CAS
| The effect of acid-base synergistic catalysis on upgrading of volatiles from coal pyrolysis over Mg-Al composite oxides | |
| Yang, Hang1,2; Zhang, Jiehan1; Li, Changming3; Chen, Zhaohui1; Wang, Demin1; Wang, Deliang1; Sharif, Munnir Ibrahim1,2; Li, Jianling1; Yu, Jian1; Gao, Shiqiu1 | |
| 2022-08-01 | |
| Source Publication | FUEL
 |
| ISSN | 0016-2361 |
| Volume | 321Pages:10 |
| Abstract | Catalytic upgrading of coal pyrolysis volatiles is one of the most promising technical routes to achieve graded utilization of low-rank coal resource. In this work, a series of Mg-Al composite oxide catalysts (MgxAl-LDOs) were synthesized with tunable acid-base properties for upgrading the volatiles from coal pyrolysis by adjusting the Mg/Al ratio in Mg-Al hydrotalcite precursors (MgxAl-LDHs). The NH3-TPD and CO2-TPD analysis results showed the quantity of acidity sites decrease together with an increase of basicity sites as the Mg/Al ratio increased in MgxAl-LDOs. MgxAl-LDOs possessed weaker acidity strength and more acidity sites than pure Al2O3, but less basicity sites than pure MgO. The catalytic performances illustrated that the increased acidity sites in MgxAlLDOs promoted the cracking of heavy components and reduced the yield of heavy tar. Meanwhile, the weakened acidity strength and the introduction of basicity sites by Mg in MgxAl-LDOs enhanced the strong resistance to carbon deposition. Moreover, the CO2 yield and the content of light aromatic hydrocarbons in tar increased obviously after upgrading, which can be attributed to the acid-base synergistic effect of the MgxAl-LDOs. Particularly, the Mg4Al-LDO catalyst selectively improved the relative contents of light aromatic hydrocarbons, and the content of benzene, toluene, ethylbenzene, xylene, naphthalene and indene increased by 1.48, 1.54, 0.76, 2.56, 0.19 and 2.14 times (compared with the inert quartz sand), respectively. The unique catalytic behaviors of MgxAl-LDO catalysts will provide a new insight into the effect of acid-base synergistic catalysis on upgrading of volatiles from coal pyrolysis. |
| Keyword | Coal pyrolysis Catalytic upgrading Hydrotalcites Acid-base synergy |
| DOI | 10.1016/j.fuel.2022.124030 |
| Language | 英语 |
| WOS Keyword | LAYERED DOUBLE HYDROXIDES ; LIGHT AROMATIC-HYDROCARBONS ; LOW-RANK COAL ; SELECTIVE HYDROGENATION ; METAL-OXIDES ; RED MUD ; NI ; CRACKING ; TAR ; ZEOLITE |
| Funding Project | National Natural Science Foundation of China[21878310] ; Beijing Natural Science Foundation[8222042] |
| WOS Research Area | Energy & Fuels ; Engineering |
| WOS Subject | Energy & Fuels ; Engineering, Chemical |
| Funding Organization | National Natural Science Foundation of China ; Beijing Natural Science Foundation |
| WOS ID | WOS:000803687500002 |
| Publisher | ELSEVIER SCI LTD |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.ipe.ac.cn/handle/122111/53559 |
| Collection | 中国科学院过程工程研究所 |
| Corresponding Author | Li, Changming; Gao, Shiqiu |
| Affiliation | 1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Sch Chem Engn, Beijing 100049, Peoples R China 3.Beijing Technol & Business Univ, Sch Ecol & Environm, State Environm Protect Key Lab Food Chain Pollut, Beijing 100048, Peoples R China |
| Recommended Citation GB/T 7714 | Yang, Hang,Zhang, Jiehan,Li, Changming,et al. The effect of acid-base synergistic catalysis on upgrading of volatiles from coal pyrolysis over Mg-Al composite oxides[J]. FUEL,2022,321:10. |
| APA | Yang, Hang.,Zhang, Jiehan.,Li, Changming.,Chen, Zhaohui.,Wang, Demin.,...&Gao, Shiqiu.(2022).The effect of acid-base synergistic catalysis on upgrading of volatiles from coal pyrolysis over Mg-Al composite oxides.FUEL,321,10. |
| MLA | Yang, Hang,et al."The effect of acid-base synergistic catalysis on upgrading of volatiles from coal pyrolysis over Mg-Al composite oxides".FUEL 321(2022):10. |
| Files in This Item: | There are no files associated with this item. | |||||
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment