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3D printed Ni/Al2O3 based catalysts for CO2 methanation : a comparative and operando XRD-CT study

(2019) JOURNAL OF CO2 UTILIZATION. 33. p.478-487
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Abstract
Ni-alumina-based catalysts were directly 3D printed into highly adaptable monolithic/multi-channel systems and evaluated for CO2 methanation. By employing emerging 3D printing technologies for catalytic reactor design such as 3D fibre deposition (also referred to as direct write or microextrusion), we developed optimised techniques for tailoring both the support's macro-and microstructure, as well as its active particle precursor distribution. A comparison was made between 3D printed commercial catalysts, Ni-alumina based catalysts and their conventional counterpart, packed beds of beads and pellet. Excellent CO2 conversions and selectivity to methane were achieved for the 3D printed commercial catalyst (95.75% and 95.63% respectively) with stability of over 100 h. The structure-activity relationship of both the commercial and in-house 3D printed catalysts was explored under typical conditions for CO2 hydrogenation to CH4, using operando 'chemical imaging', namely X-Ray Diffraction Computed Tomography (XRD-CT). The 3D printed commercial catalyst showed a more homogenous distribution of the active Ni species compared to the in-house prepared catalyst. For the first time, the results from these comparative characterisation studies gave detailed insight into the fidelity of the direct printing method, revealing the spatial variation in physico-chemical properties (such as phase and size) under operating conditions.
Keywords
CO2 methanation, Ni/Al2O3 catalyst, structured catalysts, 3D printed catalysts, operando in-situ XRD-CT, POWER-TO-GAS, CARBON-DIOXIDE, HETEROGENEOUS COPPER, HYDROGENATION, KINETICS, PERFORMANCE, ALUMINA, REACTOR

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MLA
Middelkoop, Vesna, et al. “3D Printed Ni/Al2O3 Based Catalysts for CO2 Methanation : A Comparative and Operando XRD-CT Study.” JOURNAL OF CO2 UTILIZATION, vol. 33, 2019, pp. 478–87.
APA
Middelkoop, V., Vamvakeros, A., De Wit, D., Jacques, S., Danaci, S., Jacquot, C., … Beale, A. (2019). 3D printed Ni/Al2O3 based catalysts for CO2 methanation : a comparative and operando XRD-CT study. JOURNAL OF CO2 UTILIZATION, 33, 478–487.
Chicago author-date
Middelkoop, Vesna, Antonis Vamvakeros, Dieter De Wit, Simon Jacques, Simge Danaci, Clement Jacquot, Yoran De Vos, Dorota Matras, Stephen Price, and Andrew Beale. 2019. “3D Printed Ni/Al2O3 Based Catalysts for CO2 Methanation : A Comparative and Operando XRD-CT Study.” JOURNAL OF CO2 UTILIZATION 33: 478–87.
Chicago author-date (all authors)
Middelkoop, Vesna, Antonis Vamvakeros, Dieter De Wit, Simon Jacques, Simge Danaci, Clement Jacquot, Yoran De Vos, Dorota Matras, Stephen Price, and Andrew Beale. 2019. “3D Printed Ni/Al2O3 Based Catalysts for CO2 Methanation : A Comparative and Operando XRD-CT Study.” JOURNAL OF CO2 UTILIZATION 33: 478–487.
Vancouver
1.
Middelkoop V, Vamvakeros A, De Wit D, Jacques S, Danaci S, Jacquot C, et al. 3D printed Ni/Al2O3 based catalysts for CO2 methanation : a comparative and operando XRD-CT study. JOURNAL OF CO2 UTILIZATION. 2019;33:478–87.
IEEE
[1]
V. Middelkoop et al., “3D printed Ni/Al2O3 based catalysts for CO2 methanation : a comparative and operando XRD-CT study,” JOURNAL OF CO2 UTILIZATION, vol. 33, pp. 478–487, 2019.
@article{8624018,
  abstract     = {Ni-alumina-based catalysts were directly 3D printed into highly adaptable monolithic/multi-channel systems and evaluated for CO2 methanation. By employing emerging 3D printing technologies for catalytic reactor design such as 3D fibre deposition (also referred to as direct write or microextrusion), we developed optimised techniques for tailoring both the support's macro-and microstructure, as well as its active particle precursor distribution. A comparison was made between 3D printed commercial catalysts, Ni-alumina based catalysts and their conventional counterpart, packed beds of beads and pellet. Excellent CO2 conversions and selectivity to methane were achieved for the 3D printed commercial catalyst (95.75% and 95.63% respectively) with stability of over 100 h. The structure-activity relationship of both the commercial and in-house 3D printed catalysts was explored under typical conditions for CO2 hydrogenation to CH4, using operando 'chemical imaging', namely X-Ray Diffraction Computed Tomography (XRD-CT). The 3D printed commercial catalyst showed a more homogenous distribution of the active Ni species compared to the in-house prepared catalyst. For the first time, the results from these comparative characterisation studies gave detailed insight into the fidelity of the direct printing method, revealing the spatial variation in physico-chemical properties (such as phase and size) under operating conditions.},
  author       = {Middelkoop, Vesna and Vamvakeros, Antonis and De Wit, Dieter and Jacques, Simon and Danaci, Simge and Jacquot, Clement and De Vos, Yoran and Matras, Dorota and Price, Stephen and Beale, Andrew},
  issn         = {2212-9820},
  journal      = {JOURNAL OF CO2 UTILIZATION},
  keywords     = {CO2 methanation,Ni/Al2O3 catalyst,structured catalysts,3D printed catalysts,operando in-situ XRD-CT,POWER-TO-GAS,CARBON-DIOXIDE,HETEROGENEOUS COPPER,HYDROGENATION,KINETICS,PERFORMANCE,ALUMINA,REACTOR},
  language     = {eng},
  pages        = {478--487},
  title        = {3D printed Ni/Al2O3 based catalysts for CO2 methanation : a comparative and operando XRD-CT study},
  url          = {http://dx.doi.org/10.1016/j.jcou.2019.07.013},
  volume       = {33},
  year         = {2019},
}

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