基于9,10-二氢蒽强化的掺氮活性炭催化松木热解制备烷氧基酚研究

李文涛; 张成博; 李凯; 牛琦; 李继红; 陆强; 贾宝; 高丽娟

doi:10.19906/j.cnki.JFCT.2023081

基于9,10-二氢蒽强化的掺氮活性炭催化松木热解制备烷氧基酚研究

doi: 10.19906/j.cnki.JFCT.2023081

李文涛^{1, 2,},
张成博^1,,
李凯^1, ,,
牛琦^1,,
李继红^1,,
陆强^1,,
贾宝^2,,
高丽娟^2,

1.
华北电力大学新能源发电国家工程研究中心, 北京 102206
2.
中国电建集团西北勘测设计研究院有限公司, 陕西西安 710065

基金项目: 国家自然科学基金（52276188, 52276189），江苏省碳达峰碳中和科技创新专项（BE2022307）和“西安英才计划”青年人才项目（XAYCQN21002）资助

详细信息

通讯作者:
Tel: 01061772030, E-mail: likai18@ncepu.edu.cn

中图分类号: X511
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- 文章访问数: 39
- HTML全文浏览量: 17
- PDF下载量: 3
- 被引次数: 0
出版历程
- 收稿日期: 2023-10-11
- 修回日期: 2023-12-03
- 录用日期: 2023-12-04
- 网络出版日期: 2024-01-18

Research on the 9,10-dihyroanthrancene assisted catalytic pyrolysis of pine over nitrogen-doped activated carbon for preparation of alkoxyphenols

LI Wentao^{1, 2
,},
ZHANG Chengbo^1
,,
LI Kai^{1
, ,},
NIU Qi^1
,,
LI Jihong^1
,,
LU Qiang^1
,,
JIA Bao^2
,,
GAO Lijuan^2
,

1.
National Engineering Research Center of New Energy Power Generation, North China Electric Power University, Beijing 102206, China
2.
Power China Northwest Engineering Corporation Limited, Xi'an 710065, China

Funds: The project was supported by the National Natural Science Foundation of China (52276188, 52276189), Technology Innovation Special Fund of Jiangsu Province for Carbon Dioxide Emission Peaking and Carbon Neutrality (BE2022307), Young Talent Project of Xi'an Talent Program (XAYCQN21002).

摘要

摘要: 本研究以核桃壳基掺氮活性炭（NAC）为催化剂、以9,10-二氢蒽（DHA）为供氢剂，开展了松木选择性热解制备烷氧基酚研究，探究了氨水浓度对NAC理化性能的影响，揭示了DHA/松木比、热解温度、NAC/松木比对烷氧基酚生成的调控机制。结果表明，合适的氨水浓度能够改善NAC孔隙结构及活性位点分布，当氨水浓度为15%时，所制备NAC对烷氧基酚的生成促进效果最佳；当DHA/松木比为3、热解温度为550 ℃、NAC/松木比为3时，烷氧基酚产率最大，为5.27%，明显高于纯松木直接催化热解时烷氧基酚产率（1.74%）。
- 生物质 /
- 掺氮活性炭 /
- 催化热解 /
- 9,10-二氢蒽 /
- 烷氧基酚
Abstract: In this study, nitrogen-doped activated carbon (NAC) was prepared from walnut shell and applied to the catalytic pyrolysis of pine for selective preparation of alkoxyphenols with 9,10-dihyroanthrancene (DHA) as the hydrogen donor. The effects of ammonia concentration on the physicochemical properties of NAC were investigated. The regulatory functions of DHA/pine ratio, pyrolysis temperature, and NAC/pine ratio on the generation of alkoxyphenols were revealed. The results showed that the pore structure and active sites distribution of NAC could be improved by proper ammonia concentration. The NAC prepared at ammonia concentration of 15% was the best for the production of alkoxylphenols. The yield of alkoxylphenols reached its maximum value of 5.27% at DHA/pine ratio of 3, pyrolysis temperature of 550 ℃, and NAC/pine mass ratio of 3, which was much higher than that from catalytic pyrolysis of pure pine (1.74%).
- biomass /
- nitrogen-doped activated carbon /
- catalytic pyrolysis /
- 9,10-dihyroanthrancene /
- alkoxyphenols

HTML全文

图 1 NAC的N₂吸附-脱附曲线及孔径分布

Figure 1 N₂ adsorption/desorption isotherms and pore size distribution of NAC

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图 2 NAC的SEM图像

Figure 2 SEM images of NAC

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图 3 NAC的XPS谱图

Figure 3 XPS spectra of NAC

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图 4 DHA/松木比对烷氧基酚产率的影响

Figure 4 Effect of DHA/pine ratio on the yield of alkoxyphenols

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图 5 氨水浓度对烷氧基酚产率影响

Figure 5 Effect of ammonia concentration on the yield of alkoxyphenols

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图 6 热解温度对烷氧基酚产率的影响

Figure 6 Effect of pyrolysis temperature on the yield of alkoxyphenols

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图 7 NAC/松木比对烷氧基酚产率的影响

Figure 7 Effect of NAC/pine ratio on the yield of alkoxyphenols

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表 1 NAC的孔结构参数

Table 1 Pore structure parameters of NAC

Sample	S_BET/(m²·g⁻¹)	S_mic^a/(m²·g⁻¹)	v_total^b/(cm³·g⁻¹)	v_mic^c/(cm³·g⁻¹)	v_mic/v_total/%	d_average/nm
0%-NAC	748.541	528.310	0.486	0.262	53.91	2.493
5%-NAC	871.653	565.312	0.547	0.298	54.48	2.512
15%-NAC	891.144	749.898	0.503	0.394	78.33	2.258
25%-NAC	856.319	780.752	0.442	0.384	86.88	2.066
^{a, c}: t-plot surface area and pore volume of micropores, ^b: p/p₀= 0.9907.

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表 2 NAC中不同种类含氮官能团的相对含量

Table 2 Relative contents of different types of nitrogen-containing functional groups in NAC

Sample	Pyridinic-N/%	Nitrogen oxide/%	Pyrrolic-N/%	Pyridone-N-oxide/%
5%-NAC	21.78	29.24	28.19	20.79
15%-NAC	32.03	24.07	33.26	10.64
25%-NAC	29.47	34.41	23.54	12.58

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