Highly Porous Para-Aramid Aerogel as a Heterogeneous Catalyst for Selective Hydrogenation of Unsaturated Organic Compounds.

ABSTRACT: A new para-aramid aerogel based on a polymer made by the reaction of terephthaloyl dichloride with 2-(4-aminophenyl)-1H-benzimidazol-5-amine (PABI) is introduced. The aerogel readily bound Pd (+2) ions and was used as a hydrogenation catalyst in some industrially actual reactions. The new material, which did not contain p-phenylenediamine moieties, was prepared in two form factors: bulk samples and spherical pellets of 700-900 μm in diameter. Aerogels were synthesized from 1% or 5% solutions of PABI in N,N-dimethylacetamide via gelation with acetone or isopropanol and had a density of 0.057 or 0.375 g/cm³ depending on the concentration of the starting PABI solution. The specific surface area of the obtained samples was 470 or 320 m²/g. Spherical pellets containing Pd

SUBMITTER: Lermontov SA 

PROVIDER: S-EPMC10421250 | biostudies-literature | 2023 Jul

REPOSITORIES: biostudies-literature