Revenue from Contracts with Customers Revenue from Contracts with Customers (Tables)

6 Months Ended

Jun. 30, 2023

Revenue from Contract with Customer [Abstract]

Disaggregation of Revenue

The Company’s portfolio of products is integrated into a variety of end uses, which are described in the table below.

Key End Uses	Key Products
Clean fuels, emission control & other	• Refining hydrocracking catalysts
	• Emission control catalysts
	• Catalysts used in production of renewable fuels
	• Catalyst activation
	• Aluminum sulfate solution
	• Ammonium bisulfite solution
Polymers & engineered plastics	• Catalysts for high-density polyethylene and chemicals syntheses
	• Antiblocks for film packaging
	• Niche custom catalyst
Regeneration and treatment services	• Sulfuric acid regeneration services
	• Treatment services
Industrial, mining & automotive	• Sulfur derivatives for industrial production
	• Sulfuric acid for mining
	• Sulfuric derivatives for nylon production

The following tables disaggregate the Company’s sales, by segment and end uses, for the three and six months ended June 30, 2023 and 2022, respectively:

	Three months ended June 30, 2023
	Ecoservices		Catalyst Technologies(2)		Total
Clean fuels, emission control & other	$	8,426	$	—	$	8,426
Polymers & engineered plastics	—		26,045		26,045
Regeneration and treatment services(1)	98,494		—		98,494
Industrial, mining & automotive	51,145		—		51,145
Total segment sales	$	158,065	$	26,045	$	184,110
	Three months ended June 30, 2022
	Ecoservices		Catalyst Technologies(2)		Total
Clean fuels, emission control & other	$	7,386	$	—	$	7,386
Polymers & engineered plastics	—		32,204		32,204
Regeneration and treatment services(1)	87,143		—		87,143
Industrial, mining & automotive	98,439		—		98,439
Total segment sales	$	192,968	$	32,204	$	225,172

	Six months ended June 30, 2023
	Ecoservices		Catalyst Technologies(2)		Total
Clean fuels, emission control & other	$	13,166	$	—	$	13,166
Polymers & engineered plastics	—		49,179		49,179
Regeneration and treatment services(1)	186,838		—		186,838
Industrial, mining & automotive	95,801		—		95,801
Total segment sales	$	295,805	$	49,179	$	344,984
	Six months ended June 30, 2022
	Ecoservices		Catalyst Technologies(2)		Total
Clean fuels, emission control & other	$	14,482	$	—	$	14,482
Polymers & engineered plastics	—		57,858		57,858
Regeneration and treatment services(1)	161,116		—		161,116
Industrial, mining & automotive	171,430		—		171,430
Total segment sales	$	347,028	$	57,858	$	404,886

(1)As described in Note 1 to these condensed consolidated financial statements, the Company experiences seasonal sales fluctuations to customers in the regeneration services product group.

(2)Excludes the Company’s proportionate share of sales from the Zeolyst International and Zeolyst C.V. joint ventures (collectively, the “Zeolyst Joint Venture”) accounted for using the equity method (see Note 9 to these condensed consolidated financial statements for further information).