Peer reviewers in catalysis often face several challenges, including: 1. Time Constraints: Balancing peer review with their own research and professional responsibilities. 2. Complexity of Research: Evaluating highly specialized and technical research can be demanding. 3. Bias and Conflict of Interest: Ensuring impartiality and avoiding conflicts of interest can be challenging. 4. Lack of Recognition: Peer reviewers often receive little recognition or reward for their contributions.