Coal fly ash-based Y zeolite modified by ammonium hexafluorosilicate and its enhanced toluene adsorption under high humidity conditions - Sijia Weng; Fanghe Ye; Cha Jing; Xinyang He; Xueyun Zhong; Juntai Tian; Chen Yang; Ke Lei; Haomin Huang; Mingli Fu (Journal of Environmental Chemical Engineering, 2025)