Carbon-supported CuO Catalyst Prepared from Oil Palm Empty Fruit Bunch (EFB) for Low-temperature No Removal

Ahmad, Norhaiza; Ibrahim, Naimah; Ali, Umi Fazara Md; Yusuf, Sara Yasina; Fahmi, Muhammad Ridwan

doi:10.1016/j.proeng.2016.06.623

Cited by 8 publications

(8 citation statements)

References 38 publications

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“…In addition, Cu 1+/2+ and Mn 2+/3+/4+ also have significant catalytic effects on SCR reaction; thus, the extensively distributed Cu and Mn oxides are considered to be promising low-temperature SCR materials [ 6 ]. The carbon-based materials-supported Mn catalyst in the NH 3 -SCR reaction can exceed 90% of the conversion rate below 200 °C, while the supported Cu catalyst could increase the surface active site and further promote the SCR reaction [ 7 , 10 ]. Moreover, the modification of Mn can further improve the denitrification activity [ 11 ], and Cu can enhance the N 2 selectivity of the catalyst [ 12 ].…”

Section: Introductionmentioning

confidence: 99%

Low-Temperature Selective Catalytic Reduction DeNOX and Regeneration of Mn–Cu Catalyst Supported by Activated Coke

Ren

2021

Materials

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The activated coke is a promising support for catalysts, and it is important to study the performance of the activated coke catalyst on the removal of NOx. In the current research, a series of the activated coke-supported Mn–Cu catalysts are prepared by the incipient wetness impregnation method. The effects of the molar ration of Mn/Cu, the content of Mn–Cu, the calcination temperature, and reaction space velocity on NO conversion are investigated, and it was found that the 8 wt.% Mn0.7Cu0.3/AC had the best catalytic activity when the calcination temperature was 200 °C. The existence of SO2 caused the catalyst to deactivate, but the activity of the poisoning catalyst could be recovered by different regeneration methods. To uncover the underlying mechanism, BET, XPS, XRD, SEM and FTIR characterizations were performed. These results suggested that the specific surface area and total pore volume of the poisoning catalyst are recovered and the sulfite and sulfate on the surface of the poisoning catalysts are removed after water washing regeneration. More importantly, the water washing regeneration returns the value of Mn3+/Mn4+, Cu2+/Cu+, and Oα/Oβ, related to the activity, basically back to the level of the fresh catalyst. Thus, the effect of water washing regeneration is better than thermal regeneration. These results could provide some helpful information for the design and development of the SCR catalysts.

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Section: Introductionmentioning

confidence: 99%

Low-Temperature Selective Catalytic Reduction DeNOX and Regeneration of Mn–Cu Catalyst Supported by Activated Coke

Ren

2021

Materials

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“…Hence, it appears to be very important to modify the raw biochar materials to enhance their DeNO x properties. However, the type of raw material and its nature also dictate the DeNO x activity of resulting biochars (Cha et al, 2010;Ahmad et al, 2016). In addition, the nature and internal structure of the raw materials can affect the catalytic activity of the prepared biochar-based catalysts.…”

Section: Introductionmentioning

confidence: 99%

Agricultural Waste Derived Catalysts for Low Temperature SCR Process: Optimization of Preparation Process, Catalytic Activity and Characterization

Wang

et al. 2020

Aerosol Air Qual. Res.

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Carbon-based catalytic materials have received significant attention for low temperature flue gas denitrification (DeNO x ) process, due to their physicochemical properties and ease of modification. To improve the DeNO x efficiency, preparation of biochar catalyst supports was conducted that included the acid treatment of the agricultural wastes rice straw, corn cobs and lotus leaves. Taguchi experimental design (3 4 ) was employed to screen suitable carbon materials and optimize the preparation parameters of the biochar. All of the acid-modified and unmodified samples were evaluated to determine their performance and they were characterized by using SEM, BET and FT-IR analysis. The experimental and characterization results showed that acid modification of the biochars improved their DeNO x performance, which may have been due to the changes in the physical and chemical properties of the carbon material following the acid treatment. The optimum combination in the acid modification procedure was found to be the use of lotus leaf carbon treated with an acid/mass ratio of 1.50 and a pyrolysis temperature of 800°C. The biochar prepared using these optimum preparation parameters were then employed as a carrier to support an active catalyst component (MnO x ). The lotus leaf biochar supported 10 wt% manganese catalyst prepared using ultrasonic impregnation method exhibited nearly 90% NO x conversion at 250°C at a high space velocity of 45, 000 -1 , and it exhibited strong resistance to H 2 O. Additional studies showed that higher redox capacity and suitable surface acidity were two of the deciding factors in the improved low temperature SCR performance of the 10% Mn/LBC catalysts.

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“…Bhd., Nibong Tebal, Malaysia. The collected EFB fibre was washed with water and dried in oven at 110ºC for 24 h. The EFB was first carbonized and activated using one-stage chemical activation with phosphoric acid (H3PO4) at 1:1 (w/v) ratio and heated in the furnace for 24 h at 400°C to create pores, as described in previous work [10]. The heated EFB was then washed with distilled water to remove the remaining acid.…”

Section: Materials Preparationmentioning

confidence: 99%

“…NO adsorption experiment was explained in detailed in the previous work [10], except that the operating parameters i.e. sample loading, gas concentration and reaction temperature were changed to 5 g of CuO/EFBC, 500 ppm NO/He and 200ºC.…”

Section: No Removal Experimentsmentioning

confidence: 99%

“…metal catalyst on the carbonaceous material's surface is another step to enhance NOx reduction. Copper oxide (CuO) for example was used in many studies including our previous work as it is inexpensive and exhibits high reactivity towards NO reduction [10][11][12]. The variables chosen in the process of CuO impregnation onto the carbonised EFB (CuO/EFBC) may affect the effectiveness of NO x reduction, therefore, this study aims to optimise CuO impregnation using response surface method, specifically using Box-Behnken design (BBD).…”

Section: Introductionmentioning

confidence: 99%

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Optimisation of Copper Oxide Impregnation on Carbonised Oil Palm Empty Fruit Bunch for Nitric Oxide Removal using Response Surface Methodology

et al. 2018

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Oil palm empty fruit bunch (EFB) was successfully modified with phosphoric acid hydration followed by impregnation with copper oxide (CuO) to synthesize CuO modified catalytic carbon (CuO/EFBC) for low-temperature removal of nitric oxide (NO) from gas streams. CuO impregnation was optimised through response surface methodology (RSM) using Box-Behnken Design (BBD) in terms of metal loading (5-20%), sintering temperature (200-800˚C) and sintering time (2-6 hours). The model response for the variables was NO adsorption capacity, which was obtained from an up-flow column adsorption experiment with 100 mL/min flow of 500 ppm NO/He at different operating conditions. The optimum operating variables suggested by the model were 20% metal loading, 200˚C sintering temperature and 6 hours sintering time. A good agreement (R2 = 0.9625) was achieved between the experimental data and model prediction. ANOVA analysis indicated that the model terms (metal loading and sintering temperature) are significant (Prob.>F less than 0.05).

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Carbon-supported CuO Catalyst Prepared from Oil Palm Empty Fruit Bunch (EFB) for Low-temperature No Removal

Cited by 8 publications

References 38 publications

Low-Temperature Selective Catalytic Reduction DeNOX and Regeneration of Mn–Cu Catalyst Supported by Activated Coke

Low-Temperature Selective Catalytic Reduction DeNOX and Regeneration of Mn–Cu Catalyst Supported by Activated Coke

Agricultural Waste Derived Catalysts for Low Temperature SCR Process: Optimization of Preparation Process, Catalytic Activity and Characterization

Optimisation of Copper Oxide Impregnation on Carbonised Oil Palm Empty Fruit Bunch for Nitric Oxide Removal using Response Surface Methodology

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