Plasma-Enabled Selective Synthesis of Biobased Phenolics from Lignin-Derived Feedstock.

Converting abundant biomass-derived feedstocks into value-added platform chemicals has attracted increasing interest in biorefinery; however, the rigorous operating conditions that are required limit the commercialization of these processes. Nonthermal plasma-based electrification using intermittent renewable energy is an emerging alternative for sustainable next-generation chemical synthesis under mild conditions. Here, we report a hydrogen-free tunable plasma process for the selective conversion of lignin-derived anisole into phenolics with a high selectivity of 86.

Double -Grid Method for Solving the Bethe-Salpeter Equation Lanczos Approaches.

Convergence with respect to the size of the -points sampling grid of the Brillouin zone is the main bottleneck in the calculation of optical spectra of periodic crystals the Bethe-Salpeter equation (BSE). We tackle this challenge by proposing a double grid approach to -sampling compatible with the effective Lanczos-based Haydock iterative solution. Our method relies on a coarse -grid that drives the computational cost, while a dense -grid is responsible for capturing excitonic effects, albeit in an approximated way.