Citation: Paliwoda, Damian; Comboni, Davide; Por\; eba, Tomasz; Hanfland, Michael; Alabarse, Frederico; Maurin, David; Michel, Thierry; Demirci, Umit B.; Rouquette, J\'er\^ome; di Renzo, Francesco; van der Lee, Arie; Bernard, Samuel; Haines, Julien (2021). Anomalous Volume Changes in the Siliceous Zeolite Theta-1 TON due to Hydrogen Insertion under High-Pressure, High-Temperature Conditions.. The journal of physical chemistry letters, 12, pp. 5059-5063.