Depicts a half-length portrait of George Andrew Olah, holding a piece of chalk as he illustrates the cycle underpinning the methanol economy. To the left of the portrait, in two lines, the inscriptions "NOBEL PRIZE" and "1994" are displayed. Along the right edge, following the curve of the rim, the inscription "GYÖRGY OLÁH" is visible, with the engraver's privy mark placed below it.

The methanol economy, advocated by George Andrew Olah, involves the conversion of CO₂ (carbon dioxide) into CH₃OH (methanol) using renewable hydrogen (H₂). This process captures CO₂ from the atmosphere or industrial emissions and converts it into a usable form of energy. Methanol can then be used as a clean fuel or chemical feedstock. When burned or used in fuel cells, CH₃OH releases CO₂, which can be recaptured and reused, creating a closed-loop system. Olah’s approach promotes carbon recycling, reduces greenhouse gas emissions, and supports a sustainable energy future, offering a viable alternative to fossil fuels like CH₄ (methane).

Depicts a three-dimensional model of a characteristic, stable carbocation structure. Below the depiction, in two rows each, the denomination and the inscription "FORINT" are displayed on the left, while the year of issuance "2024" and the mint mark "BP." are placed on the right. Along the edge at the top, following the curve of the rim, the inscription "HUNGARY" is visible.

A stable carbocation is a positively charged carbon atom in an organic molecule that is stabilized by various factors, such as resonance, hyperconjugation, and inductive effects. These carbocations are less reactive and more likely to participate in chemical reactions. Stability is enhanced when the positive charge is delocalized over multiple atoms through resonance, as seen in allylic or benzylic carbocations, or when electron-donating groups help stabilize the charge. The study of carbocations was significantly advanced by George Andrew Olah, who won the Nobel Prize in Chemistry in 1994 for his pioneering work on carbocation chemistry. Olah’s research focused on the isolation and stabilization of carbocations, which was crucial in understanding their behavior and applications in organic reactions, particularly in the fields of catalysis and synthetic chemistry. His work laid the foundation for many advances in both theoretical and practical chemistry.