CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
We hereby consent to the incorporation by reference in the Registration Statements on Form S-8 (Nos. 333-220774 and 333-227643) of PQ Group Holdings Inc. of our report dated February 27, 2020 relating to the financial statements, financial statement schedule and effectiveness of internal control over financial reporting, which appears in this Form 10‑K.
/s/ PricewaterhouseCoopers LLP
Philadelphia, Pennsylvania
February 27, 2020