Alumina Supported Iron Catalyst for Hydrogen Production: Calcination Study

doi:10.15242/ijacebs.u1215228

Cited by 2 publications

(3 citation statements)

References 11 publications

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“…The peaks at 2θ = 36, 43, and 73 • correspond to Zn-Fe interactions. A peak at 2θ = 44.39 • can also be observed, which indicates the presence of an alloy of Cu-Cr [43], which is characteristic of sludge from alloy processes. The diffraction patterns show wide peaks and a large amount of noise at the baseline, unlike the other catalysts.…”

Section: Characterization Results Of Thermoenergetic Properties Of Symentioning

confidence: 93%

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Waste to Catalyst: Synthesis of Catalysts from Sewage Sludge of the Mining, Steel, and Petroleum Industries

et al. 2020

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The generation of sewage sludge presents a problem for several manufacturing companies as it results from industrial processes or effluent treatment systems. The treatment of this type of waste requires high economic investment, for this reason, it is necessary to find alternatives to recover the valuable materials of the sludges. In this study, metal catalysts were synthesized using waste sludge from the steel, mining, and hydrocarbon industries. The waste sludge was subjected to thermal treatments for the removal of organic content and the reduction of metals with hydrogen current to activate their catalytic properties. The sludge and synthesized catalysts were analyzed to determine their physical, chemical, thermoenergetic, and catalytic properties. Catalytic activity was evaluated using CO chemisorption and by thermal–catalytic decomposition of crude oil. The best conditions for synthesizing the catalysts were a calcination temperature between 300 and 500 °C and a reduction temperature between 300 and 900 °C. The catalysts presented a specific surface between 2.33 and 16.78 m2/g. The catalytic material had a heat capacity between 0.7 and 1.2 kJ/kg∙K. The synthesized materials presented catalytic activity comparable to that of commercial catalysts. With this recovery technique, the industrial waste can be valorized, obtaining catalyst derived from the sludges and promoting the circular economy of manufacturing companies.

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Section: Characterization Results Of Thermoenergetic Properties Of Symentioning

confidence: 93%

“…The catalyst C4 shows two reduction stages: the first reduction peak appears at 465 • C. The second reduction peak was at 682 • C, both of which correspond to the reduction of iron species, and mainly reduction from Fe 3 O 4 to FeO [43].…”

Section: Temperature-programmed Reduction (Tpr) Of Catalystsmentioning

confidence: 99%

Waste to Catalyst: Synthesis of Catalysts from Sewage Sludge of the Mining, Steel, and Petroleum Industries

et al. 2020

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“…The first one between 250-460 • C that can be described as a transformation towards Fe 2 O 3 , a second region that is between 480-800 • C that the authors associate with Fe 3 O 4 formation. Moreover, the last area that is between 830-950 • C, which is related to the Fe formation [42,43].…”

Section: Catalyst Reducibility Analysismentioning

confidence: 99%

Catalytic Cracking of Heavy Crude Oil over Iron-Based Catalyst Obtained from Galvanic Industry Wastes

et al. 2020

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Sewage sludge from the galvanic industry represents a problem to the environment, due to its high metal content that makes it a hazardous waste and must be treated or disposed of properly. This study aimed to evaluate the sludge from three galvanic industries and determine its possible use as catalysts for the synthesis of materials. Catalyst was obtained from a thermal process based on dried between 100–120 °C and calcination of sludges between 400 to 700 °C. The physical–chemical properties of the catalyst were analyzed by several techniques as physisorption of N2 and chemisorption of CO of the material. Catalytic activity was analyzed by thermogravimetric analysis of a thermo-catalytic decomposition of crude oil. The best conditions for catalyst synthesis were calcination between 400 and 500 °C, the temperature of reduction between 750 and 850 °C for 15 min. The catalytic material had mainly Fe as active phase and the specific surface between 17.68–96.15 m2·g−1, the catalysts promote around 6% more weight-loss of crude oil in the thermal decomposition compared with assays without the catalyst. The results show that the residual sludge of galvanic industries after thermal treatment can be used as catalytic materials due to the easiness of synthesis procedures required, the low E-factor obtained and the recycling of industrial waste promoted.

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Alumina Supported Iron Catalyst for Hydrogen Production: Calcination Study

Cited by 2 publications

References 11 publications

Waste to Catalyst: Synthesis of Catalysts from Sewage Sludge of the Mining, Steel, and Petroleum Industries

Waste to Catalyst: Synthesis of Catalysts from Sewage Sludge of the Mining, Steel, and Petroleum Industries

Catalytic Cracking of Heavy Crude Oil over Iron-Based Catalyst Obtained from Galvanic Industry Wastes

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