A challenge faced in the development of green ammonia synthesis via NRR is the critical evaluation of catalysts. We analyzed the documents related to green ammonia synthesis to determine the prevalence of keywords important to catalyst evaluation. Of the 2256 documents analyzed, 1167 (52%) documents were found to have discussed reaction "rate", "yield", or "mechanism." More than 40% of 1500 documents with a focus on electrocatalysis discussed faradaic efficiencies. Recent reports have discussed the need for a set of standards for experimental reporting that would support the idea that ammonia formed during catalysis originated from N2. NRR experiments may be subject to contamination from exogenous ammonia or reducible forms of nitrogen that can affect the reporting of yields and catalyst efficiencies; therefore, control experiments are needed within the field. Experiments using 15 N2 are important to confirm the source of nitrogen in ammonia. We analyzed the documents related to green ammonia synthesis to determine the prevalence of experiments utilizing 15 N2 for experiments. Approximately 4.1% of the 2256 documents were found to have discussed N or isotopically labeled reagents. This finding agrees with the assessment by NRR experts for the need of increased use of experimental controls for more accurate catalyst evaluation.