Anuj A. Verma

TL;DR: Operando X-ray absorption experiments and density functional theory (DFT) calculations are reported that elucidate the role of copper redox chemistry in the selective catalytic reduction (SCR) of NO over Cu-exchanged SSZ-13.

TL;DR: In this article, the standard selective catalytic reduction (SCR) reaction at 473 K with 320 ppm NO, 320 ppm NH 3, 10% O 2, 8% CO 2, and 6% H 2 O was observed to track with a hydrated Cu(II) species in ultraviolet-visible-near infrared spectroscopy (UV-Vis-NIR) at ambient conditions.

TL;DR: In this article, the site requirements and mechanism of dry NO oxidation were examined on a series of Cu-SSZ-13 catalysts (silicon/aluminum atomic ratio 4.5) with Cu:total-aluminum (Cu/Al tot ) atomic ratios ranging from 0.02 to 1.6.

TL;DR: In this paper, the role of residual H+ sites on small-pore chabazite zeolites was discussed in the context of low temperature selective catalytic reduction (SCR) on high aluminum Cu-SSZ-13.