Carbon capture and storage (CCS) is widely seen as a key technology for mitigating climate change. Public engagement with CCS is important for a range of reasons, but previous work has not explored the perceived rationales for, or benefits of, public engagement amongst CCS experts (including those who engage the public themselves). Here, we present mixed-methods research (comprising expert interviews and an online survey) to elucidate these rationales, and expose CCS expert views of public engagement. Our findings indicate some differences in perceptions of public engagement with CCS (and of the risks and benefits of CCS) between those who engage directly with the public and those who do not: the former tend to have a more nuanced view of engagement, and are also more enthusiastic about the benefits of CCS, than the latter. Overall, CCS experts recognise the importance of public engagement for the roll-out of CCS for both substantive and instrumental rationales, and are largely aware of the range of factors (knowledge, values, trust, etc.) influencing public engagement. Nevertheless, the relatively low salience of early and substantive engagement amongst CCS experts suggests there is room for improving the flow of learning from the public engagement research literature to those charged with delivering it.

碳捕集与封存（CCS）被广泛认为是缓解气候变化的关键技术。出于多种原因，与CCS进行公众参与很重要，但是以前的工作并未探讨CCS专家（包括那些自己参与公众活动的专家）进行公众参与的公认理由或好处。在这里，我们介绍混合方法的研究（包括专家访谈和在线调查），以阐明这些理由，并公开CCS专家对公众参与的看法。我们的研究结果表明，与公众直接接触的人与不与公众接触的人之间在与CCS进行公众参与（以及CCS的风险和收益）的观念上存在一些差异：前者倾向于对参与进行更细微的了解，并且比后者更热衷于CCS的好处。全面的，CCS专家认识到公众参与对于CCS推广到实体和工具论基础的重要性，并且他们充分意识到影响公众参与的因素（知识，价值，信任等）的范围。尽管如此，CCS专家对早期和实质性参与的重视程度相对较低，这表明仍有改进从公共参与研究文献到负责提供这些文献的学习流程的空间。