Synthesizing CeO₂–NiTiO₃/Attapulgite and Investigating the Conversion Rate of NO_x, Sulfur Resistance, N₂ Selectivity, and Stability of the Catalyst through Applied SCR by Upper-Level Undergraduate Students

Abstract

This comprehensive experiment is specially designed for the third-year and above students who are majoring in chemistry, applied chemistry, and chemical engineering. Students conduct experiments in groups, which are required to synthesize the CeO2–NiTiO3/attapulgite (ATTP) composite catalyst by the sol–gel method; the resulting catalysts are further used in the research of low-temperature selective catalytic reduction (SCR) denitration to investigate the conversion rate of NO x , sulfur resistance, N2 selectivity, and stability of the catalyst. Through this comprehensive experiment based on research, students can have a full understanding of the characterization of the catalyst and master a basic analytical ability. Meanwhile, students are guided to realize the importance of environmental protection and understand how to use chemistry to carry out environmental restoration. Furthermore, in this comprehensive experiment, students’ experimental skill and the team spirit of cooperation are cultivated, which lay a solid foundation for the later graduation thesis.

Facile Preparation of CeO2 Supported on Graphene Oxide Sheets for NH3‐SCR: Improvement of Catalytic Activity and SO2 Tolerance

“…Xie et al reported a CeO 2 -NiTiO 3 /ATTP catalyst by the sol-gel method and found that its NO conversion rate decreased from 80 % to 62 % when SO 2 was fed. [14] Recently, Ma et al introduced a hollowstructured CeO 2 -TiO 2 catalyst synthesized by solvothermal method, with a NO conversion of 73 % at 300°C. However it declined sharply to 20 % in the presence of SO 2 during the 40hour stability test.…”

Methanation of Synthesis Gas to Produce Methane: A Hands-On Catalysis Experiment

“…Natural gas is a clean and high-quality energy source . Faced with economic and environmental pressures, , the demand for natural gas has gradually increased in many countries . Combining clean hydrogen with abundant CO/CO 2 by methanation (eqs –) has been intensified in the past decade as this process can relieve pressure on energy supply and is carbon neutral. − …”

“…In this journal, several papers have reported the heterogeneous catalytic process , and the catalytic reduction of NOx, bromates, and methyl oleate for undergraduate experiments. ,, Only a few CO/CO 2 conversion experiments have been presented for undergraduates despite the importance of this synthesis process in real-world applications. , Rubner et al described educational modules on the power-to-gas concept using Sabatier’s reaction (CO 2 methanation) as an example to show a path to renewable energy. This work only provides a science education curriculum for first-year undergraduate students or the general public.…”