In 2020, this method contributed approximately 0.03% of the hydrogen used in chemical and energy feedstocks. In particular, Europe has more than 40% of the world's installed electrolyzer capacity in the world, with Canada (9%) and China (8%) also making significant contributions, as depicted in Figure 2 [5]. Ammonia, a key component of the hydrogen economy, also presents significant environmental challenges. Despite being touted as a green fuel during the green revolution  
Figure 1: According to a sustainable growth scenario, the projected global demand for hydrogen by sector, spanning from 2019 to 2070, is presented in million metric tons [4]. Figure 2: Global installed electrolysis capacity by technology and region. (Hydrogen projects database 2021) [5]. of the last century, ammonia continues to be a major energy guzzler in the current era. This is particularly concerning, given that ammonia is a critical building block for the production of fertilizers and is also an emerging energy vector for hydrogen-based systems. In fact, the ammonia market was valued at a staggering 69 billion US dollars in 2021 (Figure 3) [6], underscoring the importance of developing more sustainable methods for its production and use. Ammonia production currently uses 1% of all fossil fuels, resulting in 1% of all carbon dioxide emissions [7]. While this may not seem significant, on a global scale, it is a major contributor to climate change. However, the world is beginning to recognize the need for solutions to address this issue. One potential solution is a new process for ammonia production that could be used worldwide. Ammonia is used in various industries, including food and beverage, paper, leather, rubber, wastewater treatment, medication creation, cold storage, and refrigeration systems, as well as in the printing and cosmetic sectors [8]. However, the agricultural industry is by far the biggest producer and user of ammonia. Currently, ammonia is produced by a fixed process called the Haber-Bosch process. Nevertheless, this process is not environmentally friendly, as it requires significant amounts of energy, with the reactants hydrogen and nitrogen needing to be pressurized to around 150 to 300 times atmospheric pressure, that need sustainable modifications [9]. [PERSON] et al. (2020) discovered a new catalyst based on CaFH that operates at lower temperatures and pressures to react hydrogen with nitrogen, which is typically captured from the air to produce ammonia (NH\({}_{3}\)) at 50 \({}^{\circ}\)C and can produce the same amount of ammonia in a reaction where the operating conditions are 400 \({}^{\circ}\)C and 200 bar [10]. [PERSON] et al. (2023) introduced a groundbreaking type of metal-organic framework (MOF) that exhibits exceptional capabilities in ammonia separation and extraction from the gas mixture produced through the Haber-Bosch process [11]. This MOF is made up of copper atoms linked by cyclohexane dicarboxylate organic molecules. When exposed to ammonia, the MOF undergoes a transformation into a polymer containing copper and ammonia, boasting an impressively high density of stored ammonia. What is remarkable is that these polymer strands release the bound ammonia at relatively low temperatures, effectively restoring the material back to its original rigid and porous MOF structure. The increasing focus on decarbonizing the energy sector has accelerated the adoption of green hydrogen and ammonia technologies, with several countries and companies announcing ambitious targets for their production and use. [PERSON] et al. (2020) evaluated the feasibility of producing green hydrogen and ammonia from variable solar and wind  
Figure 3: Estimated global ammonia demand from 2021 to 2050 (in billions of dollars) [6]. energy in Chile and Argentina. This study showed that flexible production processes can improve the profitability and sustainability of green hydrogen and ammonia production.