Hydrogen generation by steam reforming of tar model compounds using lanthanum modified Ni/sepiolite catalysts

Chen, M.; Li, Xiaojing; Wang, Yishuang; Wang, Chunsheng; Tian, Liang; Zhang, Han; Yang, Zhonglian; Zhou, Zhongshan; Wang, Jun

doi:10.1016/j.enconman.2019.01.066

Cited by 85 publications

(43 citation statements)

References 74 publications

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“…Ni mean crystal size of the deactivated catalyst in the CSCR process is lower than that of dry reforming process, but larger than NiO mean crystal size of the fresh catalyst, indicating that the Ni mean crystal size increased during the reaction process. This indicates that the catalyst was sintered in the CSCR process, and it would be also a reason for the catalyst deactivation …”

Section: Resultsmentioning

confidence: 99%

“…In order to prolong the life of the catalyst, many scholars have conducted in depth a lot of researches on the carrier and additives of nickel‐based catalysts. The natural carriers are beneficial to reduce the economics of the entire process, and the addition of metal additives is conductive to increasing the activity, the resistance of carbon deposition, and the sintering properties of catalyst . Although the natural carriers are inexpensive, they needed to be improved their structural properties before utilization.…”

Section: Introductionmentioning

confidence: 99%

“…However, the poor progress has been obtained in the combined reforming of bio‐oil. In addition, the nickel‐based catalyst had been widely used in steam reforming or dry reforming because of its good activity and low cost, and it was also used in the combined reforming CH 4 technology, which can obtain a promising result. Therefore, in the CSCR process, the nickel‐based catalyst is prepared to produce hydrogen in this article.…”

Section: Introductionmentioning

confidence: 99%

“…6 The utilization of bio-oil has become a thorny issue. Bio-oil reforming to produce hydrogen or syngas would be a promising way, [8][9][10][11][12][13][14][15][16][17][18][19] which is because hydrogen is a clean and high-grade energy, and the use of hydrogen does not pollute the environment.…”

mentioning

confidence: 99%

“…Bio-oil reforming to produce hydrogen has rapidly been developed in recent years. The researches were mainly focused on steam reforming [8][9][10][11][12][13][14][15][16][17][18][19] and CO 2 reforming (dry reforming). [20][21][22][23][24][25][26][27] The nickel-based catalyst is usually used in the reforming process, but it is very easy to deactivate for the carbon deposit on the Ni-based catalyst 12,17,19,28,29 or the sintered of the active center.…”

mentioning

confidence: 99%

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Research of the combined reforming of bio‐oil model compound for hydrogen production

Peng

Huang

et al. 2019

Env Prog and Sustain Energy

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The combination of steam and CO2 reforming of bio‐oil is proposed in this article. The combined reforming can make good use of the advantages of steam reforming and CO2 reforming. The results indicate that H2 yield, potential H2 yield, and H2/CO were 60.23, 81.97, and 2.77%, respectively, at the condition of 700°C and bio‐oil:CO2:H2O = 1:0.5:1.5. Bio‐oil:CO2:H2O has a significant effect on the H2 yield, potential H2 yield, and H2/CO in the process of combined reforming. A different ratio of H2/CO can be obtained by adjusting the proportion of bio‐oil:CO2:H2O, which can meet different industry requirements. The results of X‐ray diffraction and scanning electron microscope analyses indicate that the catalyst deactivation was the result of a combination of carbon deposition and Ni grain sintering, and the carbon deposition was a main reason for the catalyst deactivation.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

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Research of the combined reforming of bio‐oil model compound for hydrogen production

Peng

Huang

et al. 2019

Env Prog and Sustain Energy

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A highly integrated ceramic membrane‐based reactor for intensifying the biomass gasification to clean syngas

Wei,

Zhou,

Ding

et al. 2024

AIChE Journal

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Biomass gasification for syngas production is a key operating unit in the biomass utilization process. However, its overall efficiency and stability are often restricted by the presence of complex impurities, including particulate matters (PMs) and tars. In this study, a highly integrated ceramic membrane‐based reactor was developed for high‐temperature syngas cleaning, enabling the efficient in situ removal of PMs and tars from bio‐vapors produced by biomass gasification. Specifically, a silicon carbide (SiC) membrane could separate PMs from biomass volatiles in situ, while a structured Ni15La5/S1‐SiC catalyst (nickel and lanthanum‐laden silicalite‐1 zeolite supported on SiC foam) facilitated the catalytic reforming of tars. Compared to other control reactors (i.e., those containing either a membrane or catalyst alone), the integrated reactor showed synergistic intensification in producing clean syngas from biomass gasification, achieving PM and tar removal efficiencies of up to ~97% and ~90%, and exhibited excellent stability in five‐cycle evaluations at 800°C.

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Development of activated biochar supported Ni catalyst for enhancing toluene steam reforming

2020

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Catalytic steam reforming of tar is considered to be an attractive pathway for tar removal and H 2 production in the modern world. In this study, activation of biochar (B) from pine wood pyrolysis was performed to boost its specific surface area and pore structure. The activated biochar (AB) was used as a catalyst support with the aim to enhance the catalytic activity. The catalytic reforming performance of toluene over Ni/AB catalyst was investigated, and the catalytic behavior of Ni/AB catalysts was compared with Ni/Al 2 O 3 and Ni/B. The effect of potassium hydroxide (KOH) to biochar ratio, Ni loading, reforming temperature, weight hourly space velocity and steam to carbon ratio(S/C) on the performance of Ni/AB catalysts were studied. The results showed that Ni/AB catalysts exhibited a superior catalytic activity for carbon conversion and H 2 production to Ni/B and Ni/Al 2 O 3 catalysts. In addition, high carbon conversion (86.2%) and H 2 production (64.3%) can be achieved with Ni/AB catalyst under the optimal operating conditions. Furthermore, in order to improve the stability of the Ni/AB catalyst, Ce was introduced to Ni/AB catalyst. According to stability tests, the H 2 concentration of Ni-Ce/AB catalysts was still higher than 2.24 mmol/min even after 20 hours reaction.

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Hydrogen generation by steam reforming of tar model compounds using lanthanum modified Ni/sepiolite catalysts

Cited by 85 publications

References 74 publications

Research of the combined reforming of bio‐oil model compound for hydrogen production

Research of the combined reforming of bio‐oil model compound for hydrogen production

A highly integrated ceramic membrane‐based reactor for intensifying the biomass gasification to clean syngas

Development of activated biochar supported Ni catalyst for enhancing toluene steam reforming

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