Adsorption-desorption of CO2 on different type of copper oxides surfaces: Physical and chemical attractions studies

Wan Isahak Wan Nor Roslam, Zatil Amali Che Ramli, Mohamad Wafiuddin Ismail, Khomah Ismail, Muhammad Rahimi Usop, Mohamed Wahab Mohamed Hisham, Mohd. Ambar Yarmo

Research output: Contribution to journalArticle

42 Citations (Scopus)

Abstract

By thermodynamics considerations, it was shown that the adsorption of CO2 on CuO surfaces is favourable (ΔG = +4.9 kJ mol -1) under standard conditions (1 atm and 298 K). Various analytical methods such as FTIR, BET, TPD-CO, TGA, XRD, XPS and FESEM were carried out to determine the properties of Cu2O and CuO and CO2 adsorption performance. Surface analysis by XPS, it was noted that 52.4% of carbonates (CO3 2-) was formed and deposited on CuO surface. By BET-CO2 method, typical amount of CO2 was adsorbed (9 cm3 per gram sample) at relative pressure of 0.78. It was relatively high compared to Cu2O with 2.1 cm3 per gram sample. The sphere-flower structure of CuO gives a better adsorption and desorption behaviour. Copper carbonate (CuCO3) formed after CO 2 adsorption was heated up until 573 K as a regeneration study of adsorbent materials. No significant loss was measured until three times regeneration. The desorption studies using TPD-CO2 indicated that about 9.5 mmol of CO2 was captured at room temperature.

Original languageEnglish
Pages (from-to)8-15
Number of pages8
JournalJournal of CO2 Utilization
Volume2
DOIs
Publication statusPublished - 2013

Fingerprint

Copper oxides
Desorption
desorption
oxide
copper
adsorption
Adsorption
Carbon Monoxide
Temperature programmed desorption
X-ray spectroscopy
Carbonates
X ray photoelectron spectroscopy
regeneration
carbonate
Surface analysis
Adsorbents
analytical method
flower
thermodynamics
X-ray diffraction

Keywords

  • CO
  • Copper oxides
  • Low temperature desorption
  • Physical-chemical adsorption
  • Regeneration

ASJC Scopus subject areas

  • Chemical Engineering (miscellaneous)
  • Process Chemistry and Technology
  • Waste Management and Disposal

Cite this

Adsorption-desorption of CO2 on different type of copper oxides surfaces : Physical and chemical attractions studies. / Wan Nor Roslam, Wan Isahak; Ramli, Zatil Amali Che; Ismail, Mohamad Wafiuddin; Ismail, Khomah; Usop, Muhammad Rahimi; Hisham, Mohamed Wahab Mohamed; Yarmo, Mohd. Ambar.

In: Journal of CO2 Utilization, Vol. 2, 2013, p. 8-15.

Research output: Contribution to journalArticle

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T1 - Adsorption-desorption of CO2 on different type of copper oxides surfaces

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AU - Wan Nor Roslam, Wan Isahak

AU - Ramli, Zatil Amali Che

AU - Ismail, Mohamad Wafiuddin

AU - Ismail, Khomah

AU - Usop, Muhammad Rahimi

AU - Hisham, Mohamed Wahab Mohamed

AU - Yarmo, Mohd. Ambar

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AB - By thermodynamics considerations, it was shown that the adsorption of CO2 on CuO surfaces is favourable (ΔG = +4.9 kJ mol -1) under standard conditions (1 atm and 298 K). Various analytical methods such as FTIR, BET, TPD-CO, TGA, XRD, XPS and FESEM were carried out to determine the properties of Cu2O and CuO and CO2 adsorption performance. Surface analysis by XPS, it was noted that 52.4% of carbonates (CO3 2-) was formed and deposited on CuO surface. By BET-CO2 method, typical amount of CO2 was adsorbed (9 cm3 per gram sample) at relative pressure of 0.78. It was relatively high compared to Cu2O with 2.1 cm3 per gram sample. The sphere-flower structure of CuO gives a better adsorption and desorption behaviour. Copper carbonate (CuCO3) formed after CO 2 adsorption was heated up until 573 K as a regeneration study of adsorbent materials. No significant loss was measured until three times regeneration. The desorption studies using TPD-CO2 indicated that about 9.5 mmol of CO2 was captured at room temperature.

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