Effects of modifying Ni/Al2O3 catalyst with cobalt on the reforming of CH4 with CO2 and cracking of CH4 reactions

Sengupta, Samik; Ray, K.K.; Deo, Goutam

doi:10.1016/j.ijhydene.2014.05.058

Cited by 94 publications

(75 citation statements)

References 48 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The precursors used were nickel (II) nitrate hexahydrate (Sigma-Aldrich, India) for nickel, and cobalt(II)nitrate hexahydrate (Sigma-Aldrich, India) for cobalt. Initially the Al 2 O 3 support was pretreated as per previously reported procedures [33]. The pretreated alumina support was then impregnated with precursor solutions containing desired amounts of Ca or Mg ions, such that 2.5 and 5 wt.% of CaO or MgO were finally deposited on the Al 2 O 3 support.…”

Section: Catalyst Preparationmentioning

confidence: 99%

“…For example, cobalt (Co) has attracted recent interest as the second metal to be used with Ni in the supported catalysts [1,2,10,15,19,21,28,31,32]. In some of these studies the effect of the Ni:Co ratio has also been considered and it appears that a Ni:Co ratio of 3:1 is most suitable [2,33]. Unfortunately, the improved activity of the most active Al 2 O 3 supported Ni-Co catalyst was accompanied by increase in the amount of carbon deposited when tested at a moderate reaction temperature of 873 K [33].…”

Section: Introductionmentioning

confidence: 99%

“…In some of these studies the effect of the Ni:Co ratio has also been considered and it appears that a Ni:Co ratio of 3:1 is most suitable [2,33]. Unfortunately, the improved activity of the most active Al 2 O 3 supported Ni-Co catalyst was accompanied by increase in the amount of carbon deposited when tested at a moderate reaction temperature of 873 K [33]. Thus, to improve the performance of alumina supported Ni-based catalysts a suitable strategy needs to be explored to increase the activity and simultaneously decrease the amount of carbon deposited at these moderate reaction temperatures.…”

Section: Introductionmentioning

confidence: 99%

“…The amount of basic oxide used is also important [39,40]. Thus, it would be particularly useful to study the effect of modifying the support for the most active Al 2 O 3 supported Ni-Co catalysts studied previously [33] and comparing these catalysts with Al 2 O 3 supported Ni catalysts for which the support was also modified.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Modifying alumina with CaO or MgO in supported Ni and Ni–Co catalysts and its effect on dry reforming of CH4

Sengupta

Deo

2015

Journal of CO2 Utilization

Self Cite

View full text Add to dashboard Cite

Section: Catalyst Preparationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Modifying alumina with CaO or MgO in supported Ni and Ni–Co catalysts and its effect on dry reforming of CH4

Sengupta

Deo

2015

Journal of CO2 Utilization

Self Cite

View full text Add to dashboard Cite

“…Calcination is performed at 773 K for 6 h [5] or at 823 K for 2 h [6], 4 h [3,7] or 6 h [7]. The catalysts are reduced at: 823 K for 4 h [5], 873 K for 1 h [3], 973 K for 3 h [7] or at 1073 K for 2 h [6]. Juan-Juan et al [8] prepared Ni/Al 2 O 3 catalysts by hydrogen reduction of nickel salt at 773 K and 973 K for 2 h and avoided the calcination.…”

Section: Introductionmentioning

confidence: 99%

Ni-Pd-Al2O3 catalyst supported on reticulated ceramic foam for dry methane reforming

Nikolić¹,

Kamberović²,

Korać³

et al. 2015

Metall Mater Eng

View full text Add to dashboard Cite

In the present study, Ni-Pd/Al 2 O 3 catalyst supported on α-Al 2 O 3 based foam was prepared and evaluated in the dry methane reforming process. Corresponding metal chlorides were deposited to the foam surface by impregnation of the foam with ultrasonically aerosolized salt solutions at 473 K and drying at that temperature. Calcination step was excluded and the catalyst was reduced at very low temperature -533 K. The reforming experiment lasted for 3 h, with standing time of 1 h at the following temperatures: 873, 973 and 1023 K. Conclusions on selectivity, catalytic activity and stability were reached on the basis of CO and H 2 yields.

show abstract

Development of Co Supported on Co−Al Spinel Catalysts from Exsolution of Amorphous Co−Al Oxides for Carbon Dioxide Reforming of Methane

et al. 2019

View full text Add to dashboard Cite

In this study, redox exsolution method was used to synthesize Co/Co−Al spinel for dry reforming. The aim is to improve metal‐support interaction, which enhances the catalyst's stability and minimizes carbon deposition. The synthesized catalysts were observed as Co embedded on Co deficient CoAl2O4‐like spinel (denoted as Co−Al spinel). The reduction temperature was optimized at 750 °C. Investigations on the effect of Co loading revealed that optimum Co loading is needed to control the Co particle size, providing balance between limiting carbon deposition rate and preventing dissolution of Co into the support. The best performing catalyst, Co‐15, in which the molar ratio of Co and Al is 15 : 85 produced a stable 81.5 % and 87.4 % conversions for CH4 and CO2 continuously over 24 h of reaction time with 13.51 wt% of carbon deposition. The strong metal‐support interaction of Co and Co−Al spinel in Co‐15 stabilizes and prevents the sintering of Co particles, enhancing the efficiency for dry reforming reaction.

show abstract

Effects of modifying Ni/Al2O3 catalyst with cobalt on the reforming of CH4 with CO2 and cracking of CH4 reactions

Cited by 94 publications

References 48 publications

Modifying alumina with CaO or MgO in supported Ni and Ni–Co catalysts and its effect on dry reforming of CH4

Modifying alumina with CaO or MgO in supported Ni and Ni–Co catalysts and its effect on dry reforming of CH4

Ni-Pd-Al2O3 catalyst supported on reticulated ceramic foam for dry methane reforming

Development of Co Supported on Co−Al Spinel Catalysts from Exsolution of Amorphous Co−Al Oxides for Carbon Dioxide Reforming of Methane

Contact Info

Product

Resources

About