Citric acid-assisted hydrothermal method for preparing NiW/USY–Al2O3 ultradeep hydrodesulfurization catalysts

Fan, Yu; Xiao, Han; Shi, Gang; Liu, Haiyan; Qian, Ying; Wang, Tinghai; Gong, Guangbi; Bao, Xiaojun

doi:10.1016/j.jcat.2010.12.014

Cited by 125 publications

(63 citation statements)

References 63 publications

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“…Additionally, the length of WS 2 slabs in NiW/HB-M was distributed in a narrower range of 1-7 nm with average values of 2.6 nm (L) and 2.6 (N). It has been reported in earlier literatures that the active phase over zeolite support would be larger and more stacked than that over alumina support, 14,28,34 which was in agreement with our results. This can be explained by a weaker interaction developed on the zeolite support by the sulded phase compared to alumina, well known for its dispersion ability.…”

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confidence: 94%

Restraining deactivation of hierarchical zeolite supported NiW catalysts in the HDS of thiophene

et al. 2015

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NiW catalysts supported on g-Al 2 O 3 (NiW/Al 2 O 3 ), commercial Beta (NiW/HB) and hierarchical Beta prepared by base-acid treatment (NiW/HB-M) were characterized by X-ray diffraction (XRD), N 2 sorption, infrared spectroscopy (IR), transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS).The catalytic performance of these catalysts was evaluated in the hydrodesulfurization (HDS) of

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confidence: 94%

Restraining deactivation of hierarchical zeolite supported NiW catalysts in the HDS of thiophene

et al. 2015

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“…2). The lower temperature peak at about 600 • C is corresponded to the reduction of octahedrally coordinated polymeric NiWO species [31,32]. There was no pronounced difference observed in this band between two catalysts.…”

Section: Hds Catalytic Activity Of the Catalystsmentioning

confidence: 91%

A novel catalyst of Ni,W-surface-Ti-rich-ETS-10/Al 2 O 3 : Its role and potential of HDS performance for steric hindered sulfur compound 4,6-DMDBT

Ren

Feng

et al. 2016

Catalysis Today

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“…The results of the average length and layer number of MoS2 crystallites, which were measured through the statistical analysis of about 25 representative images including over 300 slabs obtained from each catalyst, are shown in Table 5,. The average length (Lav) and layer number (Nav) were obtained from the following Equation (1) [49]:…”

Section: Hrtem Of the Corresponding Sulfided Catalystsmentioning

confidence: 99%

Post Synthesis of Aluminum Modified Mesoporous TUD-1 Materials and Their Application for FCC Diesel Hydrodesulfurization Catalysts

Xia

Duan

et al. 2017

Catalysts

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Post-synthesis methods are a promising technology and have received much attention. In this paper, a series of post-synthesis aluminum modified TUD-1 (PAT) materials with different Al contents were successfully prepared by using aluminum isopropoxide to be Al sources, then the as-synthesized materials were adopted as support additives mixed with commercial γ-Al 2 O 3 to prepare hydrodesulfurization (HDS) catalysts for FCC diesel. The supports and catalysts were analyzed using N 2 adsorption-desorption, XRD, SEM, Py-IR, ICP, 27 Al MAS NMR, UV-vis, H 2 -TPR and HRTEM techniques. The results of Py-IR and 27 Al MAS NMR indicated that the addition of Al species could bring Lewis (L) and Brönsted (B) sites into Si-TUD-1, and that the material of PAT-3 had the highest total acidity sites and Brönsted acid sites among the series PAT composites. The HRTEM technique showed that, compared to the traditional catalyst NiMo/γ-Al 2 O 3 , the sulfided catalyst NiMo/APAT-3 had a relatively short length (3.2 nm) and suitable stacking number (2.5) of MoS 2 slabs. The HDS efficiencies of all the catalysts were tested in a fixed bed micro-reactor with FCC diesel as feedstock. The catalytic results confirmed that the catalyst NiMo/APAT-3 possessed the highest HDS efficiency (97.0%), due to synergistic effects of advantageous properties such as higher acidity, moderate MSI, and relatively short length of the MoS 2 slabs.

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Citric acid-assisted hydrothermal method for preparing NiW/USY–Al2O3 ultradeep hydrodesulfurization catalysts

Cited by 125 publications

References 63 publications

Restraining deactivation of hierarchical zeolite supported NiW catalysts in the HDS of thiophene

Restraining deactivation of hierarchical zeolite supported NiW catalysts in the HDS of thiophene

A novel catalyst of Ni,W-surface-Ti-rich-ETS-10/Al 2 O 3 : Its role and potential of HDS performance for steric hindered sulfur compound 4,6-DMDBT

Post Synthesis of Aluminum Modified Mesoporous TUD-1 Materials and Their Application for FCC Diesel Hydrodesulfurization Catalysts

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