我还见过08年录用，还没见刊的了。

我朋友2016 年在 Microporoous & Mesoporous Materials 上发表了一篇文章，去年才给页码。

投稿前一定要看看目标期刊的出版时间，我见过一个期刊，三年前的文章还没页码呢

正如楼主说的，在他在线出版日期之前和之后的论文都分配页码并检索了，为什么他的以及少量他之前的几篇还没被分配呢，因为我也遇到这个问题，

编辑终于回信了，大家帮我看看是什么意思，是不是说今年出版呢？
Thank you for the email. This is a rather unfortunate situation that the Editors took measures to resolve in the end of 2018.
        There were a number of Special Issues planned and they all unfortunately rolled together. We will have two special issues coming up as 13-01 and 13-02. Your paper will follow immediately per the acceptance date, in 13-03 or 13-04 depending on the number of pages of the papers that are older than yours.
        We are aware that this may be disappointing to the authors and thank you gain for your patience，