Enhancement of selective monoaromatic hydrocarbon and syngas products from fast pyrolysis of cassava stalks over Co, Mo promoted Ni catalysts
Artikel i vetenskaplig tidskrift, 2024

Catalytic fast pyrolysis of cassava stalks has been intriguing as a promising, feasible chemical refinery method in terms of waste-to-energy conversion from cassava cultivation. This study aims to determine the synergetic influence of Mo and Co on Ni catalysts (Ni, Ni–Mo, and Ni–Co) prepared via ultrasonic-assisted incipient wetness impregnation method for catalytic pyrolysis vapor upgrading. The results indicated that Co and Mo enhance the reducibility of NiO and promote weak-to-medium acidity, thereby enhancing Ni's performance. Mono-Ni favors cracking deoxygenation, whereas oxophilicity promoters particularly enhance the oxygen absorbability efficiency to selective deoxygenated production. A fine Ni dispersion on CoNi/SiO2 catalyst was observed to positively affect the production of monoaromatic hydrocarbons (46.10 %), in contrast to those without promoters (21.63 %). This is attributed to an optimal Ni-metallic distribution with a small crystal size of 7.01 nm and a high surface area of 342.6 m2 g−1, highlighting the effectiveness of the promoter-assisted Ni catalyst. Additionally, a high yield of H2 (66.9 %) in non-condensable gas was recorded at 550 °C. The study suggests that a simplified approach to developing Ni-based catalysts could enhance the eco-friendliness of commercial catalysts, thereby facilitating the scale-up of biomass pyrolysis applications.

Cassava stalks

Nickel nanocatalyst



Fast catalytic pyrolysis


Bui T. Thu Thao

Dại học Nguyen Tat Thanh

Manh Tung Nguyen

Dại học Nguyen Tat Thanh

Kompetenscentrum katalys

Chalmers, Kemi och kemiteknik, Kemiteknik

Ponnusamy Senthil Kumar

Pondicherry University

Nguyen Huu Hieu

Ho Chi Minh City University of Technology (HCMUT)

Vietnam National University

Duy Le

Tra Vinh University

Thuy Phuong T. Pham

Vietnam Academy of Science and Technology

Dai Viet N. Vo

King Saud University College of Science

Thongthai Witoon

Kasetsart University

Mohammad Yusuf

Clean Energy Technologies Research Institute

Chitkara University, Punjab

Van Dien Dang

Trường Đại học Công nghiệp thành phố Hồ Chí Minh

Khaled Al-Kahtany

King Saud University College of Science

Ly Tan Nhiem

HCMC University of Technology and Education

Le Kim Hoang Pham

Dại học Nguyen Tat Thanh

Journal of the Energy Institute

1743-9671 (ISSN)

Vol. 115 101693



Kemiska processer

Annan kemiteknik



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