Thanks, Kurt. As Kurt noted, our financial performance in the first quarter reflects several factors, including the effect of Winter Storm Elliott, the impact of extended maintenance turnaround activity at one of our sites in Eco Services and our order timing for hydrocracking and specialty catalyst sales in our Catalyst Technologies business. With the exception of some of the extended maintenance activity, the anticipated impact of these discrete events on first quarter results was discussed during our fourth quarter earnings call in late February. The operational disruption of Winter Storm Elliott along with the extended maintenance activity resulted in constrained availability to produce inventory and meet customer demand for virgin sulfuric acid in the first quarter. In addition and as discussed in our fourth quarter call, while we still expect percentage growth to be in the high teens for hydrocracking catalyst sales on a full-year basis, the timing of customer orders for hydrocracking catalysts was a factor in the first quarter with the majority of these sales expected to occur over the balance of the year. Total sales for the first quarter, including our proportionate 50% share of sales from the Zeolyst joint venture were $183 million, compared to $209 million in the first quarter of 2022. The change in sales reflects the lower virgin sulfuric acid volume in Eco Services, as well as order timing for hydrocracking and specialty catalyst sales, and lower sales of polyethylene catalysts in our Catalyst Technologies business. Our continued strong pricing in both businesses, helped mitigate the volume shortfall during the quarter. In addition, approximately $5 million of the change in sales is associated with the pass-through of lower sulfur costs. In the fourth quarter earnings call, we shared our expectation that first quarter adjusted EBITDA for Eco Services would be down approximately 20% compared to the first quarter of 2022 and that adjusted EBITDA for Catalyst Technologies would be down approximately 50% compared to the first quarter of 2022. Directionally, this occurred as expected, however, adjusted EBITDA for Eco Services was lower than expected principally due to the extended maintenance turnaround activity that contributed to the reduced sales volume. While adjusted EBITDA for Catalyst Technologies was better than expected, principally due to lower raw material and energy costs and favorable mix. First quarter adjusted EBITDA was $43 million, compared to $59 million in the first quarter of 2022. The change in adjusted EBITDA and the associated margin compared to the year ago quarter was due to the lower sales volume including the adverse impact of the storm and the extended maintenance turnaround activity, as well as the higher unplanned repair and maintenance costs, partially offset by higher pricing in regeneration services and in Catalyst Technologies. Moving to the next slide, I'll highlight the components of the change in adjusted EBITDA compared to the first quarter of 2022. As previously mentioned, the change in adjusted EBITDA was primarily driven by lower sales volume. Compared to the first quarter of 2022, the aggregate impact of lower sales volume for virgin sulfuric acid, lower sales of polyethylene catalysts, and order timing associated with hydrocracking and specialty catalyst was $19 million. Variable costs increased on higher natural gas, primarily in the West Coast, as well as the impact from higher freight rates. However, our continued strong pricing in regeneration services and in Catalyst Technologies more than covered the rising variable costs during the quarter, resulting in another quarter of positive price-to-cost ratio. Turning to Slide 11. Eco Services sales for the first quarter of 2023 were $138 million compared to $154 million in the first quarter of 2022. Of this change, approximately $5 million is associated with the pass-through of lower sulfur costs. The balance of the change was due to a lower volume associated with Winter Storm Elliott and the extended maintenance turnaround activity which constrained production and limited our ability to meet customer demand for virgin sulfuric acid. The impact of lower sales volume was partially offset by higher pricing in regeneration services driven by contractual price increases and index cost pass-through pricing. First quarter adjusted EBITDA for Ecoservices was $36.8 million, compared to $49.3 million in the first quarter of 2022. The lower sales volume, higher unplanned repair and maintenance costs and planned turnaround costs were the primary factors in the change in adjusted EBITDA and resulted in adjusted EBITDA margin of 26.7%. Excluding the impact of the Storm and the extended maintenance turnaround activity with reduced volume and increased repair and maintenance costs, we will continue to expect an adjusted EBITDA margin for Ecoservices to be in the low-to-mid-30% range. Turning to the results for Catalyst Technologies, on the next slide, for the first quarter, total sales for Catalyst Technologies including the Zeolyst Joint Venture were $45 million compared to $55 million in the first quarter of 2022. For Silica Catalyst, lower sales of polyethylene catalyst, driven in-part by the economic sanctions associated with the developments in Russia and Ukraine, drove the change compared to the prior year first quarter. The change in sales for the Zeolyst Joint Venture, reflect lower sales of hydrocracking and specialty catalyst sales, primarily a function of customer order timing. As we have previously noted, we expect hydrocracking sales to be up on a high-teens percentage basis in 2023 with the majority of the sales expected to occur over the balance of the year. Adjusted EBITDA for Catalyst Technologies was $13 million in the first quarter, compared to $17 million in the first quarter of 2022. The change was primarily driven by lower sales volume, partially offset by continued higher pricing and favorable sales mix. Turning to Slide 13, I'll provide an update on cash leverage and liquidity. As previously noted, we had strong cash generation in 2022 with free cash flow of $146 million. And while we expect 2023 to be another year of solid cash generation, during the first quarter of 2023, we were a net user of cash largely due to the impact of lower sales volume, changes in working capital as well as timing of capital expenditures. Our cash conversion remains strong. And we ended the quarter with a net debt leverage ratio of 3.2 times. The increase in our net debt leverage ratio was primarily driven by the change in first quarter adjusted EBITDA, relative to the year ago quarter as well as a $30 million use of cash during the first quarter associated with share repurchases in conjunction with the secondary offering by a former private equity owner. At quarter end, we had total liquidity of $119 million, comprised of cash and cash equivalents of $62 million and availability under our ABL facility of $57 million. Turning to slide 14, given our expectation for strong cash generation over the balance of the year we will maintain a balanced approach to capital allocation. We will prioritize investment in operational improvements and organic growth. And while we continue to pursue accretive bolt-on acquisitions in the current environment we will also maintain a focus on leverage reduction with expected adjusted EBITDA growth and strong cash generation, excluding any potential M&A transactions that would allow for a clear path for leverage reduction our net leverage target remains in the mid-to-low-times range. Our balance sheet remains strong with only one tranche of debt being our Term Loan B facility, maturing in 2028. We have capped 75% of our interest exposure out over the next several years and we will continue to evaluate opportunities to continue to extend our interest protection program. Turning to the full-year 2023 guidance, on Slide 15, we currently expect overall demand trends to remain positive in 2023, but continue to keep an eye on macroeconomic activity that could impact our businesses. During the first quarter we experienced significant challenges from the Winter Storm and the extended maintenance turnaround activity, resulting in lower virgin sulfuric acid sales in Ecoservices. However, we are maintaining our current guidance range for adjusted EBITDA and adjusted free cash flow. For sales, we are adjusting our guidance range of $760 million to $790 million, to a range of $730 million to $760 million to reflect lower projected pass-through of energy costs and lower expected virgin sulfuric acid volume resulting from the Storm and the extended maintenance turnaround activity that occurred in the first quarter. I will now provide some more specific guidance for the second quarter. We expect strong quarterly sequential growth in both businesses, resulting in mid-single-digit adjusted EBITDA growth for Ecovyst compared to the second quarter of 2022. In Ecoservices, we expect to see a strong volume recovery, lower repair and maintenance cost and continued favorable pricing covering our variable costs in the second quarter. This is expected to result in adjusted EBITDA growth in the mid-single digits, compared to the second quarter of 2022. We remain confident in our full-year guidance and expect lower turnarounds and increased demand in our Treatment Services and Catalyst Activation Business lines in the later part of the year. For Catalyst Technologies, we expect significant improvement in sales for hydrocracking catalysts as well as increased sales of catalyst used in the renewable fuels in our Zeolyst joint venture during the second quarter. Our full year expectation for hydrocracking catalysts remains strong with the percentage growth in the high teens, driven by strong orders for the balance of the year. As Kurt noted, we have seen some softness in the polyethylene market and along with lower expected niche custom catalyst sales due to order timing, we expect Silica Catalyst sales will be down in the second quarter compared to the prior year second quarter. As a result, we expect adjusted EBITDA for the Catalyst Technologies business to be down in the mid-single digits compared to the second quarter of 2022. We expect our second quarter results to demonstrate strong quarterly sequential growth as we continue to anticipate solid overall growth for the full year in 2023. I will now hand the call back to Kurt for some closing remarks.