In its first review of its association with 19 key industry groups, the company said it had found "material misalignment" over climate policy with the American Fuel & Petrochemical Manufacturers (AFPM) and would quit the body in 2020.

The review is part of Shell's drive to increase transparency and show investors it is in line with the 2015 Paris climate agreement's goals to limit global warming by reducing carbon emissions to a net zero by the end of the century.

It is also the latest sign of how investor pressure on oil companies is leading to changes in their behaviour around climate.

"AFPM has not stated support for the goal of the Paris Agreement. Shell supports the goal of the Paris Agreement," the Anglo-Dutch company said in its decision.

AFPM did not immediately respond to a request for comment.

Shell said it also disagreed with AFPM's opposition to a price on carbon and action on low-carbon technologies.

The review was welcomed by Adam Matthews, director of ethics and engagement for the Church of England Pensions Board, which invests in Shell and led discussions with the company over its climate policy.

"This is an industry first," Matthews said.

"With this review Shell have set the benchmark for best practice on corporate climate lobbying not just within oil and gas but across all industries. The challenge now is for others to follow suit."

AFPM counts dozens of US and international members including Exxon Mobil, Chevron, BP and Total that operate 110 refineries and 229 petrochemical plants, its 2018 annual report says.

Shell also found "some" misalignment with nine other trade associations, including the American Petroleum Institute. It will continue to engage with those groups over climate policies and monitor their alignment, Shell said.

Last year, Shell caved in to investor pressure over climate change, setting out plans to introduce industry-leading carbon emissions targets linked to executive pay.

Its chief executive, Ben van Beurden, has since repeatedly urged oil and gas producers to take action over climate and pollution.

"The need for urgent action in response to climate change has become ever more obvious since the signing of the Paris Agreement in 2015. As a result, society's expectations in this area have changed, and Shell's views have also evolved," van Beurden said in the report.

"We must be prepared to openly voice our concerns where we find misalignment with an industry association on climate-related policy. In cases of material misalignment, we should also be prepared to walk away."