@article{paperid:1095102, author = {Mahmoodi, Mahdiyeh and Akhlaghinia, Batool}, title = {Expanded Perlite-Polyphosphoric Acid (EP-PPA) as a Low-Cost Heterogeneous Solid Acid Catalyst for Green and Metal-Free Synthesis of Nitriles from Aldehydes}, journal = {Croatica Chemica Acta}, year = {2023}, volume = {96}, number = {1}, month = {January}, issn = {0011-1643}, keywords = {Expanded Perlite-Polyphosphoric Acid (EP-PPA); heterogeneous catalyst; reusable catalyst; nitrile; aldehyde; solvent free. INTRODUCTION In synthetic organic chemistry; functional groups (particularly nitrile group) play a vital role. Due to easy transformation of}, }